Er, you're protestant, Alisha, aren't you?
If yes, the matter of drinking being a sin would most likely have it's roots in a historical, rather then a strictly religious matter. I'm not going to start on the Temperance movement in detail (it's 2 a.m.), but drinking became a sin in protestant dominations in the US after women speaking up against domestic abuse, drunk men being unable to work and Irish immigrants being scary.
I don't believe in any religion as such, even if I'm baptised Lutheran. I don't believe in heaven or hell. I've read the Bible and parts of it are great.
I think the most likely expression for me might be Humanist. I believe in the good in people.