First, all prescription drugs......all of them, are the some of the most dangerous and the most potent poisons known to man. It would take several pages to list the reasons why you should avoid prescription drugs at all costs.
when you eat the shit off of the shelf at the local grocer you get sick from all the crap they put in your food, then you need medical treatment that cost money, so you have to buy insurance, then you have to use insurance to buy prescription drugs, then the side effects of one prescription requires the use of other prescriptions to alleviate those symptoms...
IMO, a person should experiment with natural psychotropics in small quantities for many reasons... mostly personal ones. but if you need a laboratory to make a drug, it is not natural and it is usually harmful .
Cocaine is a natural substance in coca leaves, it is soaked in benzine or ether to extract the active ingredient just as making bubble hash is, but it is still natural.....just more concentrated. although its not really a psychotrope.
Its not made in a lab....its made in a hole in the ground in the middle of the jungle and covered with benzene and strained...
As far as marijuana and how it affects your brain goes.... There are only two chemicals in your brain that matter in the conversation.....Dopamine and Seratonin... All drugs relating to pleasure involve these two chemicals no matter what.... To say that marijuana is somehow better or different in that respect is simply wrong.