I am a Mom, too, and got into drinking wine to relax at home at night (before dinner during, and after -- while cleaning up!)
I think the reason that we turn to wine for that nightly relaxation or escape as Moms is that we are stuck here. We can't go out and do something else to relax at least while the kids are very young. So we turn to wine as something we can do at home and still manage to do all those other things we need to get done -- the cooking, the cleaning, the laundry, packing the kids' lunches, etc. All can be done while sipping wine.
I'm now at the stage where it has come back to bite me in the @ss.... and it is no longer the escape it used to be. It is work but I am finding other ways to "escape" and trying to redefine what I do in the evenings. My kids are also getting a little bigger, which makes it easier to get out and do different things (and away from that cozy bottle of wine at home).
So... welcome to SR and keep reading and posting. You'll figure it out.