There was a time during negotiations where RDJ argued on the side of the other actors, taking a role as a Daddy for the younger pups so they wouldn't get screwed over on their new contracts. That's pretty damn cool. Good for him. Marvel is notorious for being tightwads when it comes to paying actors in their films, so it's great a veteran like RDJ can step in and be demanding enough to get everyone what they deserve. If the cast of the film that had the largest weekend opening in history and is currently the 3rd highest grossing film ever made doesn't deserve a raise than I don't want to live in this world.
There's another quote from him where's it obvious that the man is confident (as he should be) but also understands the nature of the beast: "It's the thing of: Why give up the belt when it feels like you can barely get jabbed?" he said. "Most people are saying that right when they get knocked out." With previews of Avengers: Age of Ultron coming hot for Comic-Con this weekend, and the film expecting to be one of the highest grossers of 2015, what could be the biggest year for film ever, I see no potential knockout for RDJ or Marvel.
If he can ride two movies for that much cash-ola, of course he wants to continue as Iron Man! Who wouldn't want to? His Tony Stark is one of the best things about the series, and Marvel would be insane not to give him what he wants. They are making too much money now to stop.
So what does everyone else think? Is it a good idea for Robert Downey Jr. to return as Iron Man? Should Marvel park a truck full of cash in his front yard to get him back?