I remember there being some really unhealthy patterns in my marriage too for a long time. They seem to be gone, but it certainly took a long time.... not that there are other things we're trying to work through.
I think you need to start insisting your H take part in more of the childcare. For example, if he goes out one Saturday night then you go out the next. If he cannot do a 50/50 arrangement then you'll need to start hiring a babysitter more often and jointly share in that cost. This will get you both used to single parenting too. There will likely be times you need babysitters.
You seem really angry. Try not to make decisions out of anger. Often those are the ones we regret. If you still feel this way once the anger has calmed down then you are much closer to making the right decision.
There is no arriving, ever. It is all a continual becoming.