This rings really true to me. I was heavily addicted to drugs as a teenager (went through rehab, etc). I now realize it was due almost entirely to a miserable,

This rings really true to me. I was heavily addicted to drugs as a teenager (went through rehab, etc). I now realize it was due almost entirely to a miserable, abusive home life and crushing boredom. I'm now an adult in my 30s with a family and I haven't touched a drug since I was ~18 years old. I drink socially but don't enjoy getting drunk, nor do I have any desire to "get wasted" like I used to crave so much. While I believe personality has a lot to do with it (maybe the "cage" is your own head for some people?), the environment is critical. Teenagers in particular are prone to this because they're essentially adults mentally, but have little freedom, autonomy or respect from the rest of the world.