^Off topic but I feel like MDPV would thus be really good for studying the compulsions of the brain.
Tobbacy is really addictive though. At one point I was using (haha) twice a week for like three weeks, and I was both lucky and surprised that I didn't become absolutely addicted. The withdrawal is both psychotic and depressing, lasts for awhile, and permeates all relationships. Fuck. Glad to be over with that. But I smoked a Cigar about four months ago, experienced some withdrawal and cognitive deficit for a couple months as well as some cravings, then was ok. In some very highly regarded medical sectors its labeled as the most addictive substance.