I have a co-worker and close friend in the same boat. They have two small children and an a teenage step-daughter. They are both good people, just cant work it out. Neither one could afford the home they live in on ther individual salary, and my buddy would be beaten to death on child support and alimony.
I am begging him to stick it out, but he is ready to give up.
Luckily me and my wife have a good relationship despite the job. I was doing this when we met so we didn't have the stress of a career change into LE.