A woman takes to court to support your children financially, you can’t let the woman who gave birth to your children win. So you kill her and or the kids.
A woman after discovering that you are a bad person decides to leave you. You are now exposed and it’s your fault but you can’t let her go. So instead of dealing with the loss and improving yourself, you kill the woman.
You rape a woman or underage girl and get her Pg, you decide to kill the woman or girl ,to avoid arrest. Better to be arrested for murder than for rape and or impregnating a minor. You throw throw the woman off a building and say she committed suicide.
When you are in any situation listed bear in mind , death isn’t far off. Think of how to escape.