I wish you'd pick up your direct line to The Lord and ask Him why, in the first place, did He create cannabis in its various natural forms around the world—and why our brains were created with chemical receptors for the THC molecular compound; then report back to us here. Copping it on Satan won't suffice. If God isn't the ultimate authority, and creator of the Universe (a universe which includes, it logically follows, Satan—the ultimate apologetic device) in your world, then who else could it possibly be?