"It is far easier, cheaper and more humane to educate a population and provide them with the healthcare and counseling that they need than it is to deal with the horrors that are going on around you today due to prohibition."
This is a seemingly simplistic statement to something a lot more complex. Your brain doesn't care if you get counseling. It just wants its next high. If you can't get that next high from a computer game, you'll certainly want it from something more powerful (and in most cases, harmful). I'm surprised you haven't mentioned the neurological effects of using drugs like cocaine.