How old are your children mate? Obviously if they are 17/18 its not so important that you are around all the time.

However, if they are youngsters, maybe find a job closer to home. If you dont love your wife any longer, its a bad idea to stay together just for the kids. The atmosphere will rub off on them and do more harm than good.

Sit on it for a month and see how you feel. Talk to your kids and ask them what they think of you being away.

Hope you get it sorted mate