Used to use. Have not for a very long time. I don't think it is intrinsically harmful but it creates such a waste of mental and physical energy especially for young people that are still in the educational system.
It is very nice mix with sex but after about 20 years of use, I experienced some severe anxiety and paranoia with it's use. I hear that is not so uncommon in males. So.......... in light of that, the employment testing that is commonplace today, and the legal penalties, it's just not worth it.

__________________
Lots of people talk and few of them know, soul of a woman was created below

I can't get through to her 'cause it doesn't permit
But I'm gonna give her everything I've got to give.

I hear your sweet voice calling
out my name
As I stare from a six foot cell
And from beyond I heard the words
Deceptively Yours