I didn't insult him, Fiona. The point is it is a fact that an actor will always be replaced by somebody younger as he gets older. They have done it with James Bond, for example. Imagine Angelina Jolie was in her late forties or early fifties when they decided to make a new Lara Croft franchise. Do you think they would hire her again for the role? I don't think so, because she would be too old. They would hire a younger actress.
Don't get me wrong. Robert is great as Tony Stark. He has made this character his own. Granted, his acting made the Iron Man movies a huge success. However he will be replaced by a younger actor some time in the future, like any other actor in a movie franchise. That's inevitable.
It's only inevitable if they decide to do another Iron Man movie after RDJ has retired. There have been many great actors who have continued to play leads well into their 60's.
RDJ is brilliant as Tony Stark - if they replace him while he is still willing to do the part, then they are fools. Fools to take a chance on a new guy when they have a proven winner willing to do it.
I'd probably see the movie when it's out on DVD, but I don't think i'd go out of my way. As someone who loves to watch RDJ, seeing a movie that "could" have had him, but doesn't would probably leave me feeling that there was s huge gaping hole in the film. And that wouldn't be fair to the poor schmoo who signed on to try and fill his shoes.
It's not about getting worked up. If you love chocolate and someone says "well, have vanilla, it's good too" - you'd probably say "maybe...but I really love chocolate".