Thank you both for the responses. As LBrain mentioned, some people are just heavy drinkers. It's possible that my husband is just that, and my own alcohol abuse has pushed him into drinking more often. My parents are heavy drinkers, as I mentioned, but I don't think they have the issues I do. I've always had a knack for getting addicted to things. Knowing that is what kept me away from doing any sort of drug when I was in an environment that seemed a bit fueled by substance abuse.
As for now, I believe you're both right and that I need to focus on my own sobriety. Blaming my husband for being a heavy drinker isn't helping anything. I would love to start going to the gym. I didn't mean to, but a few weeks ago I accidentally stayed sober for a few days straight. I started working out at home and after working out just didn't feel the need to have a drink. I think exercise will be a great substitute for now.
I am also thinking of creating timelines for my evenings. If I keep myself busy, I can avoid drinking. The biggest problem there is that over the past few years I've begun including alcohol into my hobbies and activities. (I don't know anyone else who has a beer while they do laundry). I read, paint on occasion, cook, but I've included drinking in all of those things. I think I could remove drinking from reading and painting, but for some reason being in the kitchen makes me want to drink, so it's hard to keep up the cooking without drinking.
Any way, thanks again for the replies =)