The influence of marijuana to teenagers

It is pretty common that teenagers smoke marijuana. It is still illegal most of the states because it has alot of side effects. First of all, teenagers who smoke marijuana have less bright future. They only hangout with smokers, and usually do not care about school works. I think their personality also changes dramatically. They get extremely emotional, and sometimes lose their memories while they are high. It is also very dangerous and also addicting. Marijuana is extremely expensive as well. However, high school students do not really care if they can smoke. There are at least couple people in school that smokes weed, and it is not hard to get it on street. I chose this topic because I used to go public school in Canada, and saw many people try to deal and got high during classes. It is really serious problem that American high school faces.