I'm so sick of forgetting myself to remember who I am.

One of my friends who shall remain nameless..well it is a really long story. He does drugs and drinks a lot. We have been friends for like 12 years. He has recently lost his job and is collecting unemployment and yet still hangs around losers. He is constantly doing drugs and drinking even though he is unemployed. His car is broken and rather than use any money to fix that he spends it on stuff to get him high. I also forgot to mention he is on probation. I try to tell him in the only way I know how. He says it hurts his feelings. But I tell him everytime I see him he needs to grow the fuck up. He thinks life is one big party. He has a lot of issues and it seems he needs to be surrounded by people order to be happy...plus he also needs to be intoxicated to be happy. I talked to him today and I told him I can't wait until he goes to jail. He got all pissy, but I dont know how else to react. I am tired of worrying about him and caring when he is just flushing his life down the toilet. So I told him to give me a call when he grows up. Of course he says he isn't addicted, he says he doesn't need the drugs. He says he "wants" the drugs. Am I crazy or is that something that addicts say?

Latest Update: He sent me a text message saying he was going to make it easy on me and that he is dead to me. Like I am supposed to argue with him.