Drug.

Probably, any drug that doesn't lead to addiction (in extremely small doses) isn't harmful. Many Rastafarians smoke weed, and nothing happens to them.

It's just that not everyone can stop in time. And as for blaming it, you clearly don't understand; it's much tastier than just plain beer. I don't drink it often, though. I also tried smoking once, but it was awful. I think it's a terrible habit. By the way, those who wanted to get me hooked back then are now trying to quit themselves.