As someone whos spent a bunch on anchors, lower away. Don't bother abseiling as i agree with the others that it introduces unnecessary risk.
BUT... do throw in a trivial amount of cash (say $10?) in the local re-bolting donation tin that many climbing areas have. Comes down to the 'if everyone did it' idea. Replacing worn shackles with new is a very quick and easy process that most experienced folk don't mind doing, it's the cost that bites.
So lower off, but chip in the trivial amount it takes to help maintain those classics. Even better, don't pinch the biners left as lower-offs! |