[monkeyshine]

So if you don't smoke pot until you are over the age of 20 your risk of becoming a coke or smack addict are greatly reduced.

[A CA Guy]

I do think that most people pick up drug habits while young and stupid. So it would think the older one gets without illegal drugs, the less likely they ever would use them .

Just common sense I think.

The older they get, the more grown up/experienced in their head they get to make wiser choices.