[jmcqk6]

>But I've also seen dozens of friends get stuck in their emotional (and educational) development for years because of weed.

Weed has different effects on different people. Assuming that weed will have the same effect on everyone is obviously a bad assumption.

There are tons of stories about many different things (gluten, msg, sugar, caffiene, coffee, tea, ice cream, tylenol, etc. etc.) having different effects on different people. Sometimes those differences are completely perceptional, and sometimes they are physical, but the outcomes are definitively different.

It's a deep cognitive bias to ignore this fact.