that doesnt make sense....ultron or no ultron, vision or no vision, tony or no tony, bruce is still the hulk until he finds a 'cure' to being the hulk....the hulk isnt a suit he can put on/take off, and be like i'm done with that....
that's why earlier in the thread i said bruce going along with tony's plans so easily was just another example of the bad character protrayal/development they had in a2 for him...they regressed with bruce in this movie as compared to the hulk movie and avengers 1....in the hulk movie: bruce was trying to find that 'cure' and hated being the hulk, but by the end he was more accepting of the hulk and was starting to get better 'control'...in avengers, they continued that theme and even though he's always knowledgeable the hulk could snap and destroy shyt, he was more confident that he could 'control'/guide the hulk if/when the hulk was needed, which they showed throughout a1.....in a2, they threw all that out the window...they made the man scared of his own shadow basically and all the confidence he had was gone....hell, to show how bad they fukked up bruce in a2, they made one of the 5 smartest people in the world not able to pronounce the name of a country he knew about, smh....
It does make sense breh. Tony and Bruce have the same goal: to not have to "suit up" anymore. When Tony tells him to imagine he's sitting on a beach turning brown instead of green, that's his endgame. He had confidence in part 1 but now he's being painted as a soldier who's got too much blood on his hands and isn't comfortable with it and wants out. I didn't see it as out of character at all, just character development.