Really? For drug addicts? What do you think about violent felons?
They get a/c, all the mod cons, 3 hots and a cot, free health care and cable, for the rest of their lives. Even if they get the death penalty, they have twenty years of coasting and whining to anyone who will listen about how unfair it is.
I know a guy who, when he's ready, has a richly deserving target picked out, and will relax inside, on the State's dime. He figures to work it so he'll die before the State gets around to killing him.