Even though I'm a good five years away from retirement (currently 55), I appreciate this thread. I was married late (age 35), we didn't have our first child until I was 40. DW quit her career job to stay home due to some health issues with that child. Had our second child a few years after that. When our oldest hit high school (two years ago) DW had had enough of the SAHM scene and went back to work 3/4 time. She is much happier being back in the work force, and having the new income is great.
This is great news for me; I'm sick of the rat race and have had a job since I was 13, and could retire (mentally) tomorrow if we were already FI. I am very good with chores, home improvement, and even already do most of the cooking (which I enjoy and she totally enjoys!); we already kid that I'm the house-husband. I've even picked up the slack on helping the kids with homework.
And she's on board with me quitting and managing the home when financially ready. The downside is that college expenses for the kids still await. Anyway, it's good to read how others have handled or plan to handle the situation.