Iron Man Rumors

I've read the rumors that seem to be flying about whether or not Robert Downey Jr. will return for another Iron Man movie.  The opinion on this subject has varied considerably.  Personally?  There is NO WAY that the character of Iron Man would be able to continue successfully without Robert Downey Jr. playing the titular role.  He is Tony Stark and Tony is Iron Man.  There is no way that this character will be able to continue without him.  It would be hard to see another character fill the role of Iron Man other than Tony.  This option would be the least worst, should another actor have to take over.  The worst would being Marvel's choice to make another actor play the role of Tony Stark,  It just wouldn't fly.  I assure you that I'd think twice about seeing it.  There are so many Marvel characters out there.  Don't screw this one up!