Marijuana's the in thing?

The use of cigarettes has been decreasing but now the use of marijuana has been increasing. 15.8% of tenth graders have said they used pot in April. And that's not including the rest of the world. Milan, Italy has been shootig marijuana constantly with 200,000 users claiming to use it as a medical need.
The number of drug use has been increasing and will probibly rise to a huge percent of the worlds population because of 1. Peer pressure, 2. Pure curiosity, and 3. Everyone else seems to be doing it.
Scientists have found that pot interferes with the brains memory center which makes you less likely to be able to memorize things that would naturally be simple. Also doing pot causes amotivational syndrome which is loss of interest in activities. Smoking pot makes you have "less fun" as well because if you're not excited or interested then that effects your ways of life.
Some do marijuana to releive stress and get away from situations but it makes matters worse. Our brains produce a chemical which helps 'buffer' stress. Doing marijuana prevents that production which in turn makes you stress out more.
The use of marijuana is just stupid unless it's for actual medical needs.