Its very good for the economy, if we are being specific. Medicinal Marijuana can bring in millions if not billions of dollars annually if properly managed and properly produced as a finished product. The medical advantages of this plant are plenty but let just throw in some statistics on the financial aspects and job creation:
Legalizing marijuana on the federal level could result in an additional $105.6 billion between 2017 and 2025, according to a new report from the cannabis analytics firm New Frontier. That figure includes projections for business tax revenues, payroll withholdings, and a 15% sales tax. Meanwhile, fully legalizing cannabis today would add 654,000 jobs and up to 1 million jobs by 2025.
Why wouldn't it be? For years in history americans and whole world has been fighting against weed and yet people are still using it everywhere in the whole world. Now governments have two options ahead of them, one option is to keep it illegal and spend tons of money to "protect" people from weed users and sellers and try to capture and prison everyone who distribute it which costs insane amount of money and people still smoke weed and even die because they get some bad stuff.
The second option however is let it be and just legalize it and make sure health and safety checks the products on the legal places, this way you both make money and eliminate the bad products that kill people.