I guess I'll open up about my past a little bit and this topic.
Legalization would KILL a lot of drug dealers. From when I was 12-16 years old, I used to help some guys sell weed up here. The market here was pretty small and I helped "grow" it. At least up where I live, weed is essentially the only big market drug. It probably takes up 75-80% of the drug market up here.
We have a huge Mexican immigrant population in my area, and thus, a lot of weed comes from them. I'm not saying that to be fucking racist, it's just true. We've had the gangs from Detroit try up here, but the market has been, for the most part, pretty cornered. I would take like an 1/8th and they'd say sell it for 20. I'd sell it for 25-30. Ontop if the cut I was making for myself, they'd pay me per ounce I sold (it really depended what kind of shit I was moving). It took them 4 years to catch onto the fact that I was doing this. I was held at knife point and told "If you were 18, you wouldn't be walking anymore". I gave them my money and ran home. I literally made thousands of dollars off of this for four years. Granted, I just bought a SHIT load of weed with it.
So, when I say I'm against it being legalized, I have pretty personal reasons. Yeah, I know it would kill the cartels. I don't know if my guys were in the cartels, I never asked (and why would I?). I just can't stand the idea of it being legal.
Maybe this doesn't relate to the topic too much, but I guess I'm just saying that I have some insider experience that says, yeah, weed is a huge cut.