Hmm, well you must be hanging out with the hardcore druggies crowd then. I have a personal friend of mine that has been my weedman for the 3 years I've been smoking. He'll occasionally have Valium but 99% of the time he only fucks with weed. Try to stay away from the people that sell multiple amounts of drugs, they have nothing going for them and will only drag you down as well.

Just FYI, coke (in moderation) isn't bad for you. Just don't get addicted. That's where the problems begin.