My ex and I married 2 weeks after college graduation. I worked to support us while he went to grad school for 5 years. We then had 5 years with awesome combined income and then he decided he wanted a divorce. Our kids were 2 and 5 when the divorce finalized. I went on a grand total of 4 first dates in the six months after that, and only one man earned a second date. I married him a year later and we celebrated our 5-year anniversary earlier this year.
I did not want to ever again be in a position where I'd be supporting someone through school. I live in a community property state, and I believe in joint finances, and I did not want that kind of risk again.
When dating now-H, I discovered I made almost 3x what he did. His salary was tiny, and his savings was therefore tiny....but he did have savings, and he was frugal. He confessed that one day he wanted to go back to school....and I almost choked. I was very honest with him about why that statement scared the bejeebers out of me . He was honest about how the income mismatch bothered him a little. We had lots of conversations about it.
Two years after we married, he quit work to go back to school full-time, with my full blessing. By then, I had gotten over a lot of my baggage from my first marriage and I knew that THIS marriage is in a much stronger spot than the last.
Plus, it was a blessing for our family to have him as a part-time SAHD for three years. AND, since we had already been living comfortably on part of my salary, anything he earned was gravy. We did many many many calculations on how going back to school would affect our time to FIRE.