What's the weirdest reason you've heard on why people have more than one child?

I was speaking to a colleague recently - she's a 60 year old lady with 2 grown kids. I have an only and she thinks it's "wrong".

She told me the story of why she had a second child. She had her first child who was probably a toddler at the time and went to a funeral.

At the graveside, the 2 children of the deceased were crying together and comforting each other and THATS when my colleague knew she definitely had to give her daughter a sibling (I'm assuming she was on the fence before or already thinking about it, but seeing this SOLIDIFIED her choice)

I honestly think this the craziest reason to want multiple kids... as a reason to give your kid someone else to grieve with?

I do understand that yes they won't be alone (friends exist though right?) But in the end there will always be someone who will have to grieve alone as there will still be the last one standing, am I wrong?

Just found her reasoning a bit morbid.