No, I don't know why I do this, stop asking.

1840 days ago, April 1, 2016, Slash and Duff gave an unannounced concert with Axl.  The reunion tour had already been announced and probably sold-out, but this was the first time the three of them had been seen together since 1993.

The first Guns'n'Roses concert performed by the people know today was on June 6, 1985.  1840 days later, in June 1990, drummer Steven Adler was trying and failing to record his work on "Civil War," the only Use Your Illusions song he would appear on.  He was fired on July 11, the first one of that group to leave.

The first G'n'R release, Live ?!*@ Like a Suicide, came out on December 16, 1986.  1840 days later, the Use Your Illusions albums were probably still on the charts.  They had been released three months earlier and the band was well into the tour.  They would play Miami the following day, their last concert in 1991.  The back-up singers and musicians had already been added and Axl was spending so much money that the tour wouldn't make a profit until 1993.

Appetite For Destruction came out on July 21, 1987.  1840 days later, the tour was still going on, with Metallica this time, and in a few days, James Hetfield would be badly burned in Montreal by pyrotechnics.  Metallica was done with their set, all but one member of G'n'R was willing to quickly start playing and keep the crowd entertained.  The one exception didn't appear on stage until about four hours after Hetfield was taken down and Axl quit singing as soon as possible.  Quebecers normally have only two choices, listen to heavy metal or riot, now they were down to one.  Finding it more humorous in hindsight, Hetfield would describe what it was like to be in the hospital, under enormous pain, and suddenly all these kids in G'n'R and Metallica t-shirts were being brought in.  He would shortly return to singing in concerts and even recording/releasing music with his band.

G'n'R released Lies on November 29, 1988.  It was a re-release of Live ?!*@ Like a Suicide along with four new songs, keeping up the band's new-found mega-stardom.  1840 days later, G'n'R had just released The Spaghetti Incident, a mostly-ignorable cover album.  The Illusions tour had been over for five months.

The Illusions albums came out on September 17, 1991.  1840 days later, Slash was leaving the band, having already written a bunch of songs and submitted them to Axl who rejected them.  So Slash recorded and toured it as a solo album, selling over a million copies, almost as many as Chinese Democracy eventually would when Axl finally got around to doing a follow-up album.  Then Slash tried to come back to the band but nothing happened, so he was out.

1840 days after Spaghetti Incident came out on , everyone in G'n'R had been replaced at least once except the guy in charge and little was going on.  A year later, "Oh My God" would be released.

"Oh My God" came out on November 2, 1999.  It was on the soundtrack for an Arnold Schwarzenegger movie.  It would get a little airplay - I know I heard it on the radio - but otherwise go nowhere.  Keeping a distance from each other, Axl Slash and Duff would release Live Era '87-93, concert versions mostly recorded during the Illusion tour.  1840 days after "Oh My God," Geffen was preparing to stop funding G'n'R for recording Chinese Democracy.  They had already released a Greatest Hits album against Axl's will earlier that year but it sold quite well.

559 days from the first real G'n'R concert to the first recorded release, 4.26% of G'n'R's existence.
218 days from the first recorded release to Appetite For Destruction, 1.66% of G'n'R's existence.
498 days from the release of Appetite to the release of Lies, 3.8% of G'n'R's existence.
1023 days from the release of Lies to the release of the Illusion albums, 7.8% of G'n'R's existence.
799 days from the release of the Illusions to the release of Spaghetti Incident, 6.09% of G'n'R's existence.
386 days from the release of Spaghetti Incident to the release of "Sympathy For The Devil," Slash and Duff's last contribution to the G'n'R catalogue, 2.94% of G'n'R's existence.
1785 days from the release of "Sympathy For The Devil" to the release of Oh My God," 13.62% of G'n'R's existence.
3310 days from the release of "Oh My God" to the release of Chinese Democracy, 25.25% of G'n'R's existence.
2687 days from the release of Chinese Democracy to the first concert with Slash, Duff and Axl, 20.5% of G'n'R's existence.
1840 days have passed since then, 14.4% of G'n'R's existence.

Slash and Duff are barely part of 40% of G'n'R's existence and if you drop the five+ years of playing old songs on stage, they're less than 24% of the band's history.

1840 days before Paul McCartney admitted Wings no longer existed - I'm going with the April 26, 1982 release date of his Tug of War album - Wings was getting ready for its third line-up and had just released "Mull of Kintyre."  2687 days before that, the Beatles were a month away from recording "I Me Mine," their final recording session.  3310 days before that, the Beatles were nearing the end of their first Hamburg residency in November 1960.  Not counting the three decades of writing, recording and releasing music since, everything Paul is known for took less time than everything Axl has done since "Oh My God" came out.

1840 days before Robert Plant and Jimmy Page released Walking Into Clarksdale, Plant was ready to release his Fate of Nations album which is my favorite work of his.  2687 days before that, it was a few months after he released Shaken' 'n' Stirred and reunited with Led Zeppelin at Live Aid.  3310 days before that, Led Zeppelin had just released The Song Remains The Same movie+soundtrack.  1785 days before that, they had just released their fourth album.  You know, the one with *that* song.  Not counting their first few albums, not counting all of Plant's albums since, he got more done in the same amount of time that Axl has spent making a "trilogy," with or without Slash and Duff.  But Plant's also had his son die and gotten in car wrecks and stuff like that.

1840 days before Phil Collins, Tony Banks and Mike Rutherford announced the Genesis reunion tour, Phil Collins was taking a break because he'd become deaf.  He had won an Oscar for his Tarzan soundtrack the previous year and the following year would be house drummer for Queen Elizabeth's Golden Jubilee, The Party at the Palace.  2687 days before that, Phil had started touring for his first post-Genesis album although it hadn't been announced that he'd left the band.  3310 days before that, Phil had released his most popular solo album, No Jacket Required, and was preparing to play Live Aid.  Genesis had been taking a break to do solo careers but would soon get back together to start on Invisible Touch.  1785 days before that, Genesis had released Duke, their first real hit in the US, and Phil Collins was getting finished with his first solo album, Face Value.  386 days before that, he began work on that album.

That's a lot of career to fit into the same time Axl spent on not-promoting an album of covers, not accepting music his employee guitarist brought in and everything that came after.  And we're not even counting previous Genesis albums with Phil as lead singer, much less all the Peter Gabriel albums, much less the albums he made with Robert Plant or Brand X, much less anything else, throwing one of his lesser songs onto a movie soundtrack ["Against All Odds"] or producing an Eric Clapton album.  He even takes breaks from making music.  You wouldn't catch Axl doing that.