Divorce is a frustrating, often expensive experience. One of the biggest expenses is often child support and spousal support. During the initial phase of divorce, legal separation, one spouse typically files for divorce and requests a temporary custody and support order. That often means that the person who doesn't file is suddenly relegated to weekend visits with their children, while being expected to pay a substantial amount for their care and upkeep.
Life doesn't always go as planned. You meet someone, you fall in love, you get married and then you start family. At that point you think that the two of you will spend the rest of your lives together raising a family and then spoiling the grandchildren. But as time wore on, it became more and more about the kids and less and less about the two of you.