I completely quit drinking alcohol and have toyed with stopping the smoke. I've gone weeks, even months without a toke and I'm here to tell you that I don't have a problem with memory. My creativity under the influence if you will is as good as it ever was, above average I might add, btw. Due to my personal experience I don't agree with anything you say here and to me it speaks more of the kind you surround yourself with rather than what is. My opinion, nothing personal.
My apologies if it sounds like a personal attack. It's not my intent.