Moderately enriched legal businessmen don't use their profits to hire muscle and buy guns for innocent-bystander-killing shootouts with rivals. Did you really not know that?
99% of the time they kill only each other. Nobody's perfect.
That's it? We're to legalize all drugs nationwide because a few innocents in some major cities are accidentally killed? And how many will die because of legalization? How many additional accidents while on drugs, overdoses, spread of AIDS and other diseases, suicides ...?
Let's have some perspective here.