"but this right is forfeited if the woman remarries, because she will be distracted by her new husband from taking care of her child, and because there is a conflict of interest between the child and the new husband. Ibn al-Mundhir (may Allaah have mercy on him) narrated that there was scholarly consensus that the motherβs right to custody is forfeited if she remarries."
What are you complaining about? Divorce is not always due to men falling short.
You said you'd rather see your child dead than to see your child in the arms of their step-father. What kind of bullshit is that? Guess what? If you get divorced, your children will probably end up with a bonus Aabbo, same way your children will get a bonus hooyo. That's life, grow up please.