If you want, you can try to sell it to me.
I was a teen when the very first Spiderman movie came out, and I found it quite entertaining at the time. (Kirsten Dunst might have had something to do with it)
I was also ok with the X-Men and saw Iron Man, which still was okayish but started to feel a bit silly to me.
I've kinda lost interest in those kinds of superhero movies. Sure I kinda liked Watchmen, if only for the great soundtrack, and ofc I've seen the praised Batman Trilogy (Begins, Dark Knight, Returns), I also kinda enjoyed Kickass for being partly a parody of its own genre. But after that era, I've never really felt the urge to watch any of these movies.
What am I missing out on? Which movies do you consider a must see (or at least great entertainment) even for someon who doesn't know a whole lot about the MCU beforehand and has never read a comic book like that?