I feel like a lot of people use cannabis because it's a substance their character cannot get physically addicted to. At least that is the reason I smoke marijuana on Ted Aukerman, but I've never smoked cannabis on him for the health buff. Ironically, $200 for a gram of weed, while inflated, isn't the most inflated thing on the server. I get a gram of cannabis IRL for about $10-20, and that's in an area where it's very inexpensive. In large cities and in areas where there is no medical marijuana the price of a gram can be a lot more.
Though roleplay regarding the consumption of cannabis could be improved because currently, the only supported mode of consumption is plain old bud. While in real life there's butane hash oil (Dabs), regular hash oil (Also dabs but not as high in THC content and not as unhealthy), edibles, and if you just really don't care about your health, cartridges. Furthermore, all cannabis is just simply cannabis; there aren't different strains with higher THC contents or high CBD contents, so on and so forth. There aren't script items for drug paraphernalia, such as pipes, bongs, rolling paper, grinders, etc. Though if you're a smart boy you could purchase a cigar, or a cigarillo and use the tobacco leaf around it to roll your bud. Furthermore, if you want a way to grind your cannabis IC, you could put it in a prescription bottle with some pennies and shake it up.
However, regarding hard drugs, I feel like they are either abused by characters for the benefits or people do not understand how that addiction works, or people to some level do understand and that's why they aren't used. If you regularly use cocaine and heroin you are going to become physically addicted to the substance, and it will register as one of the highest if not the highest survival needs in the body. If you smoke meth then you should understand that while heroin and cocaine may be described as being about 3-5 times better than sex, meth is about 20-100 times better than sex. When someone smokes meth it releases so many endorphins--specifically dopamine--that not only is it immediately registered as something the body needs to survive, it is registered as the only thing the body needs to survive. It's for those reasons I feel that not many people use hard drugs on the server. The RP to properly play an addict like that is tasking, and likely not very fun.
So there's a bunch of non-pertinent stuff about drugs.