[dmm]

Never used drugs, alcohol, or tobacco.
Good thing, too: very addictive personality type; unable to stop reading a book or playing a computer game or eating chocolate or working until reality absolutely forces it (fall asleep, wife screams, feel like puking, ravenously hungry).
Before you use any of these things, check out the skeletons in your family closet very carefully. Heredity can be destiny if you don't learn from history.
Plus, how many people lie on their deathbed wishing they'd wasted more of their life and money on such things?