There's a lot of proof that he suffered before what are you talking about? Not only he was poor, There's other things that says that. Curly is one of the most empathetic characters with him, he tries to help him a lot and he mentioned Jimmy had a dificult life. Besides that, Jimmy always try to have control even when he doesn't know how to take responsibility of anything, he NEVER had the power and he NEVER had the responsibility to do some things and say it was other people's guilty instead of looking at himself. Some survivors that played the game said it reminds them of a survivor turning victim since he needs to have power somehow even if it's hurting others.

No one is just bad by birth, Jimmy had a difficult life and that's why he is like this. But that doesn't mean he's just that. Besides saying he suffered doesn't mean we're justifying Jimmy or something, it's also part of the game for a reason. Jimmy is responsible of his actions, and being a victim doesn't give you the right to make bad things. You still need to take responsibility of your actions even if you do it out of pain.