I do coke once a while, maybe when i hit the club or go to a party. It keeps me leveled and sane, i used to get smashed drinking liquor, but taking a line will actually put you in place in a good way.
My friend smokes crack and he told me that he is not addicted, but he likes to do it when he gets the chance. What he said is that the feeling after the first hit is amazing that that's what people seem to chase all the time.
Cocaine doesn't simulate us like the harder drugs, most of the meth comes from Mexico, it's huge is the mid west and it's making its way to the east.
If you are interested you can watch
"National Geographic Worlds Most Dangerous Drug" which is meth.
At the end of it all, i rather smoke a joint and relax. You can eat, think deeply, sleep great, and fuck with passion.