[thefz]

Anecdote time: A couple of late 30 to early 40 year old friends smoke constantly since the '20s. And I mean every day, multiple joints. They claim their life is normal, I claim that... it shows somehow.

From senseless paranoia to being reclusive, and sometimes being very late/slow in grokking things, they are very different from the rest. Even from casual, weekend smokers.

I think that you can't expect to smoke 5 to 8 joints every day and lead a normal life past your '20s.