Has legalization of recreational Marijuana been better for most citizens in the states that have legalized it (Colorado, Oregon, Washington, Alaska, DC)?

These states have had legal recreational marijuana since 2012. The belief was that it would reduce drug related crime (since the drug trade would go away), reduce spending on enforcing drug trafficking crime and raise tax income that could be put to use in education, prevention and rehabilitation. What have we learned since then? Is it working as intended?

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