It seems to me that it poses roughly the same risk as alcohol. I wonder if legalization changes the amount of children with access to the drug. If all sales are illegal then someone selling it probably won't care if they are selling to an adult or a 15 year old but if selling to an adult is legal but selling to a child is not the risk is probably not worth it.
Agreed. When I was a teenager, everyone knew it was easier to buy marijuana than any sort of liquor, because there was basically no underground market for the latter. All the knee-jerk stoners in here spamming the same point are probably oblivious that regulated sales and minimum age is actually somewhat effective.
I know someone who is dying of lung cancer due to years of smoking marijuana. Its not the same instant effect as one night of drinking way way too much but you can die from both.
