I don't think there is anything wrong with pot. Alcohol is legal, and it kills more people worldwide in one year than pot ever has probably in it's whole existence. Pot users are usually docile people, who just enjoy the feeling of floating away from their worries for a bit. They differ from people who get high to escape their problems or because they need to. Absinthe and Opium don't bother me either for the same reasons. Crack, cocaine, LSD, PCP, Ecstasy, heroin, alcohol, painkillers and other abused prescription drugs have a much higher chance of making people violent and/or stupid.
People should be able to get high, as long as they don't endanger anyone elses life by getting into a car and driving, or operating heavy machinery. They should not be in charge of children, or the elderly while they are high, and I feel the same way about people who have been drinking.
There are people who get addicted to pot. It's probably a pretty high percentage, most probably similar to the numbers of people who are addicted to alcohol. Alcohol is legal and has very little medically sound properties with the exception of red wine, but pot has been proven to help with nausea, migraines, arthritis, phantom pains (paraplegics, quadriplegics and amputees), as well as alleviating some heart angina and irregular heartbeats. I don't see why we criminalize it at all, especially for people who could get some relief from it's effects. I'd love to see a study on whether or not it helps adults with ADD or ADHD cope and focus, and whether or not it calms some forms of schizophrenia. My guess is that it would given it's medicinal properties.