What is the weirdest or most ridiculous thing you have ever witnessed people genuinely argue about?

I have a story of my own for this. In a group chat I was in once, a recently separated couple started arguing over who got to keep their cat. Why they didn’t talk it out in person or at LEAST take it to their own DMs is beyond me. It literally just started when the husband shared a picture of the cat with the group and the wife started ranting about how she “didn’t want someone else raising her”, and that she was going to come by in the morning to pick her up. It started a whole back and forth between them that went on for nearly an hour.