Love them! Honestly though whenever a movie runs much more than 2 hours, I start to feel like it should have been shorter. I probably will not feel that way when it comes to this movie as I love Marvel and grew up on the comics, but I may be wishing there was an intermission so I can pee.
Just saw Captain Marvel last weekend and thought it was great. I agree with ZWExton that Avengers 1, Capt America Winter Soldier and Iron Man 1 are my favorites. I could watch them many times over and would not complain if they were longer.
I thought Black Panther was a visual feast, but not quite as entertaining although movie goers in general seem to disagree. I sometimes get annoyed that they do not follow the original comics more closely, but if they followed them too closely then I would probably be bored.
I know some people feel there are too many superhero movies now and I get that, but as a comic book junkie I'm glad we're getting to see these characters on the big screen and that the superhero movies are so much better than they used to be. I haven't been completely thrilled with the X-Men movies, but that was one of my favorite books that I read religiously from the 70's into the 90's. I will see the upcoming movie, but my guess is that they won't do the Dark Phoenix story justice.