No, but you do become legally responsible for your own health and wellbeing in significant degree. You're able to move out on your own, join the army, smoke, et

No, but you do become legally responsible for your own health and wellbeing in significant degree. You're able to move out on your own, join the army, smoke, etc. You're also at an age where you can make informed decisions things that may affect you in the future, one of which is possibly causing yourself some level of impairment in exchange for using a drug.