I would do the same thing I do with rare, single use items in video games (Think the Master Ball). I would save it indefinitely in case there is a time that I really need it in the future. I would die having never used it.

The four biggest advantages for a wired headphone when compared to Bluetooth are

1. Headphones are cheaper
2. No lag to receive audio
3. Headphones don’t need to be charged
4. Easier to connect/disconnect.

This doesn’t even touch the preference stuff, like some people prefer having a wire to avoid losing headphones, and others like wireless. Or quality, which is a can of worms I don’t want to even touch.