Meth.. everybody back home that I know is on meth. It doesnt make everybody steal, and some people can do it recreationally, but for the one's who can't maintain and go over board.. yes it is horrible.. I used to make and sell it, and you'd be surprised at the things people would do and offer just to get high... then there's some you'd see for days at a time, and then wouldn't touch it for months...
But once you're hooked on it.. you're never the same.. and i've heard people say they can still taste it.. and no matter how long they're off it, still crave it.. so my vote is meth... meth addicts should be shot.. they're done for.. they'll never be as good, or even half as good as they were before they got hooked