What should we do about alkies whose bills we pay - ban booze?
There is no rational purpose for asking that question. It has NO BEARING on justifying Weed.
The purpose is to see if what you posted was a principle or merely a rationalization - if the former, you'll appply it consistently, including to the drug alcohol.
You have not voiced a single positive argument yet.
I've been too busy shooting down bad arguments for marijuana prohibition. Here's my positive argument: by legalizing marijuana, we'd take its profits out of criminal hands; reduce motives for crime; better equip ourselves to reasonably regulate it, including age restrictions; free up the tens of billions of taxpayer dollars being spend on enforcing marijuana criminalization; and become more respectful of the liberties of adults.
Not at all. There is this thing called "Pragmatism" which makes it realistic to accept something that is several thousands of years old and ingrained in the culture while at the same time not wanting to acquire another one of equal destructive capacity.
It's called being realistic. Booze is here. It kills about 70,000 people per year. We don't need another booze.