Humans in general have decided the cost/benefit is worth it, for whatever reason
Apparently you agree with their ["Humans in general"] decision ["the cost/benefit is worth it" re alcohol], since you don't support a ban ["I don't support a ban on alcohol"]. What is YOUR reason for deciding the cost/benefit [of alcohol] is worth it?
You are conflating two questions
Wrong. I've annotated my post, above, to aid your comprehension.
I'd have no problem answering your questions but you seem like a little bit of a butt hole with an attitude so you're wasting my time.