Yes I have seen the effects of legalized drugs; I lived in Europe for over three years. Be careful of what you assume on this forum; we have some very experienced and thoughful people on FR.
Instead of engaging in over-generalized banter, let us get specific. An old friend of mine investigated a multiple murder. A daughter was raped and murdered, a boy was tortured and murdered and the grandparents were murdered by a drug dealer who was looking for a 17 year-old kid who owed him under a hundred dollars. That was in the US!
Laws cannot take the place of human dignity. If some person wants to do drugs they will do them despite what laws say. As the nation has clearly lost the drug war, it is time to get into the business and clean things up in a way that takes money and power away from the criminals.
Think about that.....
It's a shame that prohibition led to this tragic outcome. Under a sane, rational government the dealer would have sued him, they both would gone on People's Court, and Judge Milian would have chewed them both out and sent them on their way with the debt settled like she does with all the eBay and Craigslist car purchase cases.