I am not going to absolutely say he is never going to understand what he lost but....
here's the deal he is a serial assh*le that means he uses whatever is there to get whatever he wants whenever he wants it
odds are that the only reason he wants something is because it is convenient or makes him look good
assh0lic behavior at its finest
raising babies on your own is tough... doable but tough...no lying about that one
raising babies on your own with a pile of bad rubbish hanging around is impossible they will learn from his example too
and...being in a bad relationship prevents you from ever being in a healthy one...with anyone. People see how you allow others to treat you...
once you believe you deserve more and decide to cut off the anchor dragging you down and making you small, you will see how big you really are, you will have more energy because it isn't being wasted on something that isn't worth your time...