I feel ya! I used to have at least one or two glasses of merlot every night! Wine is one those things were "in moderation" comes into full effect for me. I'm sure I can live without it but I don't want to.
IF, and that's a big IF, you can limit yourself to one glass and not make it a bottle, with cheese, crackers, chocolate,etc., etc., etc., then I say have your wine if you enjoy it.
I know that in theory wine is just like everything else and can be worked into a calorie budget but something really weird happens to me when I have a glass or two, I become utterly convinced that I should start scoffing everything I can get my hands on, not a full-on binge, just an overwhelming desire to 'taste' everything in the 'fridge.
I don't get the same thing with gin so I'm sticking to the hard stuff.