Speaking for myself, if I smoke a joint and go to jail, I lose my job.
This argument is about as salient as a playground scuffle- every time you catch a kid doing something wrong, he yells, "Well, what about them!? " What are you gonna do, let him go?
FWIW, I didn't call you or anyone "evil". I said drugs are illegal, and purchasing them invariably must feed black markets somewhere along the line. That is true and inescapable. Pointing out other wrongs in our society won't make it less wrong.