You say 'Apparently you agree with their decision, since you don't support a ban.'
See what I said above. You are conflating two questions, and either you are doing it sloppily or because you are trying to be right. I suspect the latter. This will be my last comment.
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.