You don't need to keep them around for sentimental reasons, so why do you still have them? Toss them in the trash.
It doesn't matter how much you love that old skirt. If it's filled with holes you won't end up sewing, then throw it out.
You know you're never actually going to use them, so why keep them around?
Again, you're never going to use them.
If you can't wear it, you don't need to own it.
If you can't wash those stains out, then you wouldn't be caught dead wearing them anyway.
You can't wear them without a match.
Sometimes, you need to know when you've gotten all of the use that you can out of an item.