To be honest, nobody is asked to pay taxes to support large families. The amount of taxes we pay are based on our income, and is not affected by other people's amount of kids. The government decides where the funds go. They can decide to give it to kids, or they can decide to give to LGBTQ+ causes. Kids are people, too. And our tax funds should be divided per head, not per family.
Forgiveness is always the key, and not for him, but for you. Laughing at your dad's misfortune is going to make you feel guilty. I suggest against it especially if he is reaching the end of his life. And you want this to end well. People change. If your mom still spoke well of your dad growing up, she did the right thing because having a dad is something all kids need. I know he wasn't perfect but the truth is, many dads don't pay much attention to their kids. Sometimes we seek the ideal but the reality is that men are men. Of course, there are some sparkling examples which are difficult to come by but the truth is, he is just being a guy. And most guys are like that to be entirely honest. Don't expect too much.. it's not the ideal but it's the stats. I'm not saying he is blameless. I am saying, he is just a drop in the bucket. It's unfortunate, it is. But being disappointed is not helping yourself or your conscience, so don't hold anything against...