It all depends on the player I guess. I smoked quite a bit when I was younger and it really made me careless at the table. The social atmosphere was fun when I was playing with friends, but if I went into a live event baked then I might as well have just given everyone my money to save myself time. I don't smoke anymore, it's been 3 years and I haven't had a problem since. I don't know if I should condone drugs but if it works for you, go for it.