Well, it's not a midlife crisis, but here's how things worked out for a friend of mine. He told me:
I have been married for 25 years. I took a look at my wife one day and said, "Honey,
25 years ago, we had a cheap apartment, a cheap car, slept on a sofa bed and watched a 10 inch black and white TV, but I got to sleep every night with a hot 25-year-old blond. Now, we have a nice house, nice car, big bed and plasma screen TV, but I'm sleeping with a 50-year-old woman. It seems to me that you are not holding up your side of things."
My wife is a very reasonable woman. She told me, "Go out and find a hot 25-year-old blond, and I would do my part to make sure that you would once again be living in a cheap apartment, driving a cheap car, sleeping on a sofa bed, and watching a 10 inch black and white TV".