Well as far as the title of the thread goes its a very long answer. Lets just say I saw Marvel go from basically being a cinematic joke in the 80s and 90s, to Avengers Endgame.
I started getting into Marvel films and tv shows in Elementary school and High School...in the early 90s!
Yeah, I'm old.
I'd scour places like Tower Records, Warehouse , and Blockbuster video looking for any Marvel based comic movies and tv shows . At that time, all that was in circulation was basically the Bill Bixby Hulk series, The Generation X tv movie, The Captain America film, the 70s Spiderman tv show, and the 90s Punisher film, in addition to several different cartoon series up to that date including the 60s and 80s Spiderman series, The pride of the X men 80s pilot, 90s the X men ,Spiderman series Hulk, etc.
I read magazine like Starlog, Wizard magazine etc, which would have articles or blurbs about the development of potential Marvel films such as James Cameron's Spiderman, Roger Corman's F4, a She Hulk film, and Black Panther, Blade, Hulk, and so on, which were all at different studios, and seemed like they would never get made.
What was made in the 80s and 90s were embarrassing and sub-par to say the least. WB had Chris Reeves Superman, Lynda Carter as Wonder Woman, and Michael Keaton's Batman, which were considered the best of the genre at that time. The Marvel stuff couldn't even touch what WB was doing, with only Bixby's Hulk truly being considered to be close to the quality of what WB/DC had been doing.
It wasn't till Blade that Marvel began to build street cred as being able to produce competent quality films. Then ,there were the X Men and the Spiderman franchises which took things to a whole new level, and put them on par with WB/DC. At that time ,WB/DC was still recovering from Batman and Robin, and kinda in the wilderness themselves.
By the time of the first Iron Man , I was in my late 20s and I'd already seen my dream of several Spiderman and X Men films , so in alot of ways , I really wasn't expecting anything really earth shattering with Iron Man. What I didn't know is one of the guys working on those early 00's Marvel based films would influence Hollywood and the film industry...Kevin Feige.
Films like Iron Man were considered a gambles and Marvel was laughed at again for what industry types thought " They only have Iron Man, Thor and Captain America! LOL!". Well ,they went laughing all the way to the bank.
I saw Iron Man opening week and basically watched all of them ever since. I'm an O.G. geek , so there was no way I wasn't going to get into what's become the MCU. So I saw Marvel go from being a bad joke in the 80s and 90s in terms of their film catalog ,to being the goal standard in terms of quality and of a franchise ,with rival studios , including WB/DC, trying to play catch up . I've also seen Marvel basically have almost all of their catalog in one studio, and now, all their characters in one universe and continuity.
So , in alot ways , I'm still doing the same thing I was doing in the early 90s , except this time, instead of scouring video stores for Marvel films and following the developing films in magazines, I'm seeing them on the big screen and following the development of these films online.
The difference between 1999 and 2019, is that the MCU characters are considered mainstream and popular with everyone. They're part of pop culture, and they ain't going anywhere .
Its a good time to be a fan. No question. It was well worth the wait.