Me, calling dad on his mobile: Something is weird with your landline. It says "number not in use".

Dad: Nope, nothing wrong. I canceled it. They were raising the monthly fee a couple of euros and we have mobiles, so we don't need it.

Perfectly reasonable from an objective point of view, but .... but ... That phone number is a decade older than I am! I literally have life memories tied to that number.

I didn't know I could feel this way about five simple digits.