I have my parents' "matched his&hers" Centurion racing bikes that I feel would be a shame to just throw in a dumpster, but I've no idea how to find people who would appreciate them.

So my primary question here is: d'you think these are at all worth keeping? I'm not interested in cash, merely avoiding waste.

Secondary, how do I find a community? Is this it?

They're Centurion bikes, with a sticker near the crank saying "Infinity cr-mo double tapered butted tubing". Silly me took the pic from the wrong side, sorry - Front and rear derailleurs are stamped "Suntour Cyclone 7000", it's a 2*6 arrangement. The levers are on the frame and go clicky-click when shifting.