I think he'd first have to be convinced that he'd done something wrong... XD Everything's about him, so he thinks he's in the right, no matter what horrible things he did.
He just thinks people should give him respect and praise him and his tech and since it hasn't happened on the grand scale he wants it to, he's frustrated. And that frustration feeds on itself when he's so selfish.
and what if the alternative is getting constantly killed by Peter Parker's many violent friends?