Useless Objects?

‘Not fulfilling or not expected to achieve the intended purpose or desired outcome.’ “a piece of useless knowledge”

Is there a place in between useful and useless?

Will time always change the value of an objects?

There are so many things becoming useless followed by the rise of the technology, items are keep upgrading and finding their own way to keep its value. Does the value of an object depend on its usefulness? Or it’s another way round?

Generally speaking, everyone have different standard of what’s useless.

Is film camera useless? It might be useless for some outsiders but is useful for photographer.