Yeah, I think the ticket sales definitely reinforce what you are saying. But I am a lifelong comic book fan, and had dreams of seeing live action movies with these guys that didn't suck as a child. I do really enjoy the RDJ Iron Man, but from a comic fan's point of view would be happy in some ways if he were recast to not be the wisecracking master of one-liners that he was not in the classic comics. Having said that, I also know that would mean a loss of millions and millions of dollars for Marvel, which would mean fewer movies, so in that sense, I really hope it doesn't happen.
So I feel differently, but know I'm not the primary viewer base for these movies.