No worries, you aren't the only one out there with family members like this. As Rarity would say, “They are uncouth!” I'm the same way as you, I don't like alcohol (I don't drink period) and I have the habit of being quite polite. Some of my family members… Are definitely not the same.

I think that loving your family does not mean you have to be like them or that you have to be proud of them. Frankly, the most important thing is that you love your family, and sometimes disapproving of their behavior is part of actually loving them.

Yeah, everyone has family problems. My father hated me for seven years. I knew he was disappointed in me from the way he'd look at me.

Telling him I'm going to college instead of joining the military, getting married young, having a big beard, and recently liking ponies.

Good thing though, he apologized to me in a letter recently.

So even if your family is unlikeable they're still your family, but you do have the right to not like them. My instance with my father though was just painful instead of me hating him.

Don't worry, so do I! I have horrible family problems of which my parents throw things at each other and scream for no reason. Not good for young kids to see...

You don't have to like what they do, but love who they are!

Family problems are a big deal, sometimes. Even if they are loud, obnoxious and annoying--you kind of have to put up with it just on the basis that "They can die any day" and you don't want to have one of those "I could have been better or said something."  

I really wish the best for you! 

As for liking them, and being proud of them. I'll say in time you'll be proud of them--but it's only when they're gone will some people realize it. As for liking them--"I don't have to like you, but I love you." Is always the motto I hear. But they are your family so you should be able to talk to them about that--just ask them why they're like that, honestly. If they say "We're alcoholics--and that's why :D" then at least you have an answer. And you can know whether or not alcoholism runs on your side of the family.