Considering that many, many people are in jail for simple possession of marijuana, perhaps some laws need changing so that we can make more room and spend more enforcement time and money on REAL criminals.
I agree with your statement but I recall reading some where that the people in prision for possesion usually went to court for a more serious crime, but because the courts are packed they want to go through as many cases as quickly as possible so the plea bargin the more serious crimes (which would require a longer trial) and they just agree to go with possesion of drugs.
Though it's been awhile since I read this so it might not be wholey correct.