People have different brain chemistry, body chemistry, genetics, some people pre dispositioned to become highly addicted to things most of us could just put down...I knew an x mma fighter who was pretty dam good at the sport who knocked guys out for fun in bars who was no pussy, he was stupid but not a pussy and he got all fucked up on weed and he would suffer from major depression if he didnt stay high every day...He ended up in the hospital and on other meds to stay off weed and not become suicidal...Theres people who even become addicted to steroids..I know little men who cant deal with being small so they stay on cycles for many years straight just to be 20 lbs bigger then they would be naturally....Addiction can come in many different forms.If you go to rehab for pot then you're a giant pussy. That being said, I don't like pot. I don't find the way it makes me feel enjoyable. If pots the thing that ruins your life, then in all reality you probably weren't destined for greatness from the jump lol.