The gist of it was that there were two types of men who absconded from their marriages: the naughty and the needy. The naughty absconder was a simple dick-driven creature who just couldn't help himself. However much he might love his family, it always came second to his main object in life, namely, chasing women. The needy absconder was basically insecure and forever trying to prove to himself how much everybody loved him. His family was, in effect, one big love machine that needed his constant control and attention. When his kids grew older and got lives of their own and didn't need him so much, he suddenly got scared and felt old and useless. So he ran off to look for a new love machine someplace else.