Yes, I've been affected by it....but it wasn't something that I couldn't get over.

Dad was always at home with us kids while mom was always out getting drunk or sleeping with some guy. Mom left dad for another man, who turned out to be a pedophile.

As for your decision: it is more unpleasant for the children to be in a home with parents who should be divorced but aren't. It would be better IMO for your children if you were happy. They'll be upset at first but things will get better. Don't stay if it's not good for you. Because what's good for you is also good for your children and vice versa.