Not all marijuana or any drugs to be fact can be proven as an stress reliever. If there were a placebo effect experiment maybe the data would show different, but it's more of an opinion or preference than a fact.

Jails will be less overcrowded because there will be less arrests for possession of marijuana.

I totally agree many people may cause problems while they're high and it may lead to numerous problems.

Just because marijuana is legalized doesn't mean people will become any more addicted than they already were. The government will regulate the recreational marijuana to overcome addictions.

The police will have to make less arrests for possession of marijuana and more money for the state because that's less people they have to pay for in jail.

The tax from legal marijuana will go to the state and create more money for the state. Making opportunities for more businesses and public buildings.

Many people will be publicly high which can cause some problems depending on the person and how they act. It will be like a DUI situation.

The black market business for weed will steadily decline which means some people will be out of financial support. While this happens their revenue will go to legal vendors.