Vice: bad habit, especially used as a form of escapism

Not what it means. You’d also have to prove it’s a bad habit even if it were the meaning

my vice is alcohol

Also not a vice unless you’re a weird ass prude

You don’t need to be defensive about it

Pointing out your holier-thsn-thou attitude is stupid because you’re straight-upwrong about something isn’t being defensive.

You don’t like it, that doesn’t mean it’s immoral to do it