I bet if you were around during Prohibition, you'd try to convince us that all this would go away if only we would legalize alcohol. Well, we did, and it didn't go away, now did it?
Still want to promise us utopia if only we would legalize all drugs?
Huh? The Alcohol Black Market was neutralized, and indeed went away. With it went control of that Black Market by organised crime, the lucrative profits from bootleg booze, and the turf wars over alcohol.
What we have today is an unprecedented profit motive in the illegal-drug Black Market. Organized crime thrives on Black Markets - do you not recognize that empirical fact?
Still want to promise us utopia if only we would legalize all drugs?
I am not neccessarily for that extreme measure. Apparently your utopia includes having some drugs illegal-yet-readily-available 24/7 in every city and town across the USA - including to minors.