1. Peer pressure
Peer pressure is one of the biggest reasons that teenagers drink. When people pressure others, they think it's often easiest to follow behind instead of being an outcast and not resorting to these acts. However, this is really hurting you in the end for giving in to it.
2. Media
Often times, the media will influence us into believing it's not as bad. Celebrities will also try it because they want to feel powerful doing it.
3. Family
if you're in a family that does these types of things, then you are often to get into the habit of doing it. Being exposed to this type of behavior will affect your relationships and your overall life.