Both industries have been sued for harm done by their government regulated products.
And yet they're both still in business ... and others, such as brewers and distillers, have never been sued (AFAIK). Pretty weak argument for nonregulation.
(So do you agree that enriching criminals is bad policy?)
Look, bottom line, if you left the government regulate the stuff, you loose freedoms, and are liable to adhere to their regulations. The could very well say, only skank weed is ok for sale and distribution. Now, you may know a fellow who grows the “good stuff”, guess what, its still illegal. Why? Regulations.
I have no idea why all the “legalize marijuana” dope heads don't get it. If you regulate it, it will suck! Don't let big brother in on this, just argue for decriminalization.