Can't bring myself to pour out the wine I made back in the '80s, even though I'm pretty sure all the stuff that was really good has long since been consumed.   Too much time and labor and money went into it for me to feel good about just letting my garden slugs have it (though I understand it's pretty good fertilizer).

I keep thinking I should first try to find out how to make wine vinegar out of it -- can you make good wine vinegar from wine that's a bit oxidized? or just from wine that's gone "vinegary?"
I've also thought I should try mulling some of it with cinnamon, cloves, etc., to see if it's potable that way.   
Also, could a wine that's not all that tasty still be useful in cooking, e.g., to make a cake moist?

Anyway, I hardly ever go into my basement, so the wine isn't in the way.

(I'm sure if I left a few bottles out on the curb, they'd quickly be snatched up, but I don't think that's a good idea.)