I believe you misunderstand the Hulk's motivations.
The Hulk has NEVER intentionally harmed someone he did not perceive as an overt threat, or as intending him a threat. He's not a bully.
Remember that the Hulk is essentially a figment of Bruce Banner's mind. He is like a personality created to protect the main personality, Banner himself. When activated, he will attack until there is no threat whatsoever... but he is still Bruce Banner and is opposed to death like Banner is.
He has no love for property. Clearly. And will destroy anything to get to his threat.
In the movie, they "niced" him up a little bit. Even made him a little playful, which still fits in his definition. But remember that there was a ubiquitous threat (the aliens and Loki) that Bruce Banner knew could not be avoided anywhere, so he stayed to fight. Note that if any of the people he was playful with said they could take him, he would immediately crush them, as they'd become a threat.
The Hulk is actually very self controlled. He's not destruction, just rage. He just happens to cause a lot of destruction.