Get the word “old” out of your head when choosing old pieces. No one knows the age of your clothes but you. And if they are in good condition they are indeed still useful.
This is not to say hang on to every single item you own. Every closet deserves a spring cleaning. However, if you come across something that still has potential I say hang on to it until the next round of cleaning. And if you still have not found a use for it by then…toss ‘em. Good luck to anyone on this “forgotten treasure” hunt. Happy Digging!