I wouldn't say you're an abuser just b/c you do it every day. I mean, its healthy to have a glass of wine or two every day... but not much more then that if you're drinking every day (or so the doctors tell us). But if you were smoking like 7 joints a day... in my opinion that would be a bit to much. For me even one joint every single day is to much... but to each his own.

Each person I think has to decide what is "abuse" for him or her... and stay beneath that level.