I generally think of old as a good thing.

For a person I define old as beyond their physical peak, but hopefully be wise and experienced instead.

For an object I think of old as having lost their "brand new" feel, but to compensate being used alot. Thus proving it's worth through time.

Their are a lot of new things that never get old/used. And a lot of aged people that never wisen up. I call that sad instead 🙂