I agree! I have found from my own experience that each substance (legal or illegal) gives you something, courage, love, a way to escape etc, and if that is what you need then you'll become addicted to that substance. I've had friends doing "hard drugs" occasionally (every 6 months to a once a year) for years without problems, while I once tried a very (in normal views) mild substance and got psychologically addicted from the first try. Why? Because it gave me what I emotionally lacked.