Drinking wise, it was basically identical to most parties I saw in college in the US, except the kids were 16-17 instead of 18-19.
Regardless, I needed a car as a teen; my parents were both busy and my brother and I needed to do things (including work). 16 is just about the age that people start doing stuff, so that's when they start driving. It's also when people can first get jobs, so important there too.
Maybe there would be a reduction, but you would hurt a lot of innocent people in other ways. It is not for us to suffer to curb the excesses of others.
> It's also when people can first get jobs, so important there too.
This too is statistically reducing.
Cocaine (specifically, powder), sure; crack was always low status. In fact, that was the whole source of the political brouhaha over crack vs. powder sentencing disparity.