I've seen similar numbers. I'd be curious to see how becoming an entrepreneur affects this. Practically every entrepreneur I know over the age of 40 has divorced.
I was thinking about her and my future, which would require more than meager, stable income could provide.
Society hates entrepreneurship and that is why it is not a popular track: you need really thick skin to pursue it.
My wife would hate it if I wanted to start a company, if she couldn't see a solid plan. If she could see the opportunity but more importantly the roadmap she would be on board.