I was wondering is there any hobby out there beside GU collecting where there is increased value with more usage. For most hobbies, people try to keep the items at the same state they are in and if it gets more use in any way, it loses value, ie. baseball card collecting, comic book collecting. While we are terrified of dropping a baseball card or comic on the floor, a dropped bat wouldn't faze me.

More use means worse condition and less value for most hobbies but not the case with GU.

I just cannot think of one but there must be something similar or are we that unique.