I was aware that Marvel movies were a thing after Iron Man dropped in 2008 or so, but I never actually bothered to watch one until I saw the first Guardians of the Galaxy in theaters in 2014. It was, of course, freaking hilarious, so I marathoned every one released to date and saw every new one in theaters.
It is a big time commitment though...I love watching movies and dedicate a fair amount of free time to it, so going to the theater is one of my favorite pastimes (which of course was ruined by COVID, bleh).
That said, once Endgame came out I thought, "OK, that was a cool seven years, but we're done now because the story is complete." so I've not really kept up with Marvel's doings of late. We'll see if they continue to make good movies or if the quality starts to go downhill.
Finally, Tom Holland is the best Spiderman...can't change my mind there, haha. Downey Jr.'s Tony Stark is my favorite character in the franchise, followed by Johansson's Romanoff and Anthony Mackie's Falcon.