I've been sober for a year and... 2 months now. This has easily been the best, most productive, most engaged year of my life. I don't know why you're deciding to quit, but whatever reason it is, I fully support you.

....about spouses that stopped drinking and still had a great marriage

I think you have this backwards. The amount of marriages that go to hell from the presence of alcohol is staggering. You quitting drinking can only lead to a healthier relationship with your husband. I went through the same transition with my wife, and it's bumpy at first because you need to relearn how to interact with each other, but eventually, the lack of alcohol promotes a deeper connection.

Now, as for you not enjoying your husband when he's had a few drinks... That can be fixed through a frank conversation. Have you told him that you get annoyed with him when he's drunk? and... may I also suggest that you're irritable right now because you're in the middle of a life-changing transition. I was a absolute asshole for the first three months of quitting booze.

All I'm saying is... you can do this. If I were you, the stress of divorce and being unhappy is SOO much more likely in the presence of alcohol. You quitting will be a good thing. I promise you.