If anything, the Iron Man suit calls him deeper into his ordinary world of engineering and selfishness, which leads to some of the self-destruction in Iron Man 2.
Not once prior to the events of Iron Man had Tony ever stopped to reflect or consider the weight of his actions.
In Iron Man 2, Tony is faced with a question that he alone is unable to solve.
Since Iron Man has always been a part of Tony’s Ordinary World, it is unlikely that he will disembark from the Avengers altogether.