elevation vs altitude. Temperature is measured with a sensor on a pole, perhaps two metres above the ground, which is not a particularly significant amount at 2000m above sea level.
Why marijuana should not be legalized? It's because it can harm the young people who are the hope and future of human kind. Marijuana may affect the development of the brain if smoked at a young age. This is not only harming the future of young people, but also the future of our country and the world.
LSD is illegal for the same reason all the other recreational drugs have been made illegal, including alcohol. Our society used to have WAY worse drug problems than it does now. You could buy cocaine and heroin in stores, and men used to get away with drunkenly beating their wives on a way larger scale than today.