You don't think it's probable that a) university years (18-22) are likely the peak point for consumption of all drugs (as they are where I live) and b) There's

You don't think it's probable that a) university years (18-22) are likely the peak point for consumption of all drugs (as they are where I live) and b) There's a substantial availability bias in which people you know who (you knew) were cannabis users vs the intersection of people you didn't know and people who didn't use cannabis without making a big deal out of it?