GoingAlone2, I'm glad you found SR. Welcome. You will find understanding here. Take a look around, check the "stickies" at the top of the page - lots of good info to be had there. If you can manage it, an AlAnon meeting might be very good for you.
One thing I have seen many people write is that living with an active alcoholic is very destructive for the children. Again, others will have thoughts and more experience to offer, but I think you might not be ruining their lives were you to leave.
I feel for you about your evenings. Ours are like that sometimes, too. It's no fun. Take care.