With 3 kids age 4, 2 , and 11 months my wife has just went from full time to part time. It has been stressful on out marriage these first 6 years with us both full time. I have a job that requires a lot of my time, so splitting up chores was doing us in day in and day out and we were falling behind. She finishes training next week in the Nicu and I cant wait for her to only work 6 days a month!

To answer the question, I think that my wife has to have some type of job/contribution other than just keeping the house right now for her sake, not mine. To each their own, ours may change one way or the other as the kids get older. Do what you can and is best for you and yours.