When I was 16 & 17 I tried pot once a bunch of times, and 20 years later some of the folks who I used to smoke it with are still smoking.
When I run in to them from time to time they look 10 years older than the rest of us and just not the kind of people you can have a conversation with. Might as well be talking to a wall.
How do you try pot once, a bunch of times? Would that not be more than once? LOL
I have had the same experience. I use pot a lot in high school. In my early twenties I gave it up, at my girlfriend's insistence (I really wanted to keep her and we soon married). Around ten years after leaving high school I noticed my friends who still smoked pot were going no where in careers and life, and didn't care. I had moved on to six-figure salaries and they were still doing simple delivery or other minimum wage jobs. Plus they looked haggard and old. They lost the incentive to better themselves.