I think i've heard some of the valid and unvalid reasons, but my main point was...why even go as far as to let it take over your life. its not like a sport, relationship. You're just sitting in a room smoking...not doing anything
the point of getting high is to feel good, physically and mentally; it's pursuing immediate happiness. done. it's not like you're just sitting there smoking, feeling sober; it can be a social thing or just a personal thing where you ease up your brain a little bit and have some deep thoughts or just kickin it with your friends... also, the point of getting high is to enhance other aspects of life (ie socialization, eating, going to the movies, etc.).