Fair enough. Probably how Jackman felt too.
Sometimes I try to put myself in their position and think about wanting to do other movies if I was playing the role of Cap or Thor in these franchise movies. Like if I got to play a super hero in a bunch of movies, make millions of dollars, and be an icon for so many fans and young kids.. would I want to leave that and do different films just so other people can see that I can act in other roles. I don't know. (Not saying RDJ or anyone else specifically is giving that reason)