The music industry has a well documented path for those who think this is the solution to higher creativity, higher productivity, and dealing with crunch times. In fact, it is not hard to find a dozen well known names that have passed due to drug overdose, in the industry that "used" them just to get through the schedules.
And these aren't stupid people. They were good enough to learn how to play instruments better than you or I, train their voices for singing, and in some cases write their own music. They didn't start off with the intent to harm themselves, but the problem is that for most people, addiction follows recreational use. Even if the drug itself is seemingly free of the worst side effects, the person can become dependent and in that dependency can create life long problems for themselves.
And if they can't fix it, with the resources available to them, then what are the odds that a code slinger in CA has a better shot.
I can see the Rolling Stones and Aerosmith might've had longer careers had they abstained from the recreationals.