The Czech government today approved the list of hallucinogenic plants and mushrooms, including hemp, coca, mescaline cactus and magic mushrooms, and decided that people would be allowed to grow up to five pieces of such plants and keep 40 magic mushrooms at home...
Beginning January 1 Czechs may grow up to five marijuana plants without fear of criminal prosecution, although it apparently will still be a misdemeanor.
For second go and do some research about how hallucinogens work vs psychoactive drugs like ethanol or other depressants.
THEN come back and try to re-ask this question - after you have some more insight what you are talking about.
How does pot offer any more possibility of personal growth and self knowledge than alcohol?
The physical act of smoking doesn't do it - in fact, that appears to blunt your senses, and make you act stupid. Doesn't alcohol do that already?
Arrest for non-violent crimes like drug possession or sale is violence. No matter what your take on drugs, less violence in the world is a good thing.
Undoubtedly, there is a risk for abuse in any drug - as in any activity (such as computer games, I know several people who have wrecked their lives with WoW and the ilk). The risk for abuse with drugs like cocaine, heroin is relatively high. I feel there is a real risk of abuse with Cannabis, too-although of course lower.
But the risk of abuse with psychedelics is low, and they offer a real possibility of personal growth and self knowledge. This is a wise decision.