[benkahuna]

Your fundamentalist assumption that marijuana and alcohol necessarily impairs performance in all things, including poker, has no basis in fact or experimental studies.

Your categorization of some people as "drunks and stoners" is totally subjective.

Your limited experience is not sufficient data upon which to base your claims for all people. Additionally, personal observations are subject to bias and selective observation.

You even provide exceptions to your rule, but you STILL stick by it and make some little caveat about why the exceptions could occur.

Given the dependence of decision-making in poker and the influence of mood on decision-making, I'm rather surprised you'd assume no mind or mood altering substance could help people when constantly put in the stressful position of making difficult decisions.

Some people drive just fine when they're high, or even better because the frequently lower speeds and greater caution they use counteracts the other issues with the drug. In other words, they overcompensate compared to their normal driving that they take for granted.