What do I do if I live with people who are violent and bipolar when they cant get drugs?

Drugs is such a big part of there lives which highly imposes on everyones lives. There totally getto but say they are innocent. Meanwhile totally bipolar from physical dependence. I am just a guest in this house but I try to prevent drugs from ruling everyone. I would leave but some good people need me more than they know. If I leave, there will be noone decent left here. I am hated by everyone and my life has been just give give give and no thanks or respect.