Caffeine too. People are proud of how addicted they are. I used to get headaches from it, I think a lot of people do, and there was just this wtf moment of "why do I abuse this stuff"? Great PR.
I think gp means if caffeine and tobacco was included in the list of drugs the "war on drugs" would end because nobody would enforce it, thereby legalizing everything.
Of course this won't happen and I think that is to a certain degree a good thing.