Anyone can do anything, normie or robot. Just look at how many normies play vidya and watch anime nowadays. Normalfags enjoying things shouldn't stop you from doing the same.
Either way, there are some drugs that are off limits to normalfags. Obviously everyone smokes weed and drinks, and in college may experiment with LSD/MDMA, maybe even coke if the opportunity arises, but these are always in party/social settings.