Do you have a standard of living you want to upkeep without having to work around your pile of stuff?
Do you consider some items not of good enough quality to be owned and maintained by you?
Do you not want to see the world burn and the source of your collection to fail so you can’t collect anymore?
Congrats you have standards and can collect away.
Museums are Hords in the back and collection in front
Unless you’re British, then it’s the spoils of robbery in both places.
No standards on what they were willing to steal from others