actually when you inject meth/cocaine/heroine or other stuff it is not bad to move some blood into syringe to make inject better. so syringes which childrens can find or by which my town covered from time to time is abit full of blood.
drugs is most retarded when people stuck in groups just because they use drugs.
And I think that the reason marijuana isn't legalized yet is that someone has a profit from it being illegal. Maybe it's that the prescription drug companies have monopoly for drug production. Or maybe there's some corrupt deals happening behind closed doors between politicians and gangs running the illegal drug industry.