So many reasons. I’ve seen different ones. I know one guy who married a woman with 2 kids and had one together with his wife. Went over seas, found wife number 2, left her and all 3 kids. Abandon them all. Then stayed and had kids with number 2. I think, for some guys they feel the only way to have the family of their dreams is to ditch the whole family and start over clean.
I know another guy who just simply wasn’t ready for the family life and ditched his child. Then he met someone he wanted to settle down with and have a family with.
I’ve said it before . People sometimes are in love with the idea of being in love. They rush into marriage and before they know it someone is on the way. And this wasn’t in their plans.This immature love (lust really) blew up like the belly and they want a do-over. They aren’t ready to be a parent and they certainly didn’t want to be with this person for all their lives.
Some learn the second time, and some don’t.
Hey, at least these kind of do-overs is better than the ones who kill their whole family to start over.