I'd also like to point out that plenty of us with plenty of karma also have some degree of RSI (repetitive strain injury, sometimes loosely called carpal tunnel syndrome (that's just one of many forms of RSI)), in part acquired by what allowed us to get so much karma.

No way can I afford to spend a lot of mousing and clicking on a zillion "pending" comments to make them visible to the hoi polli. Heck, ignoring the greater good, why would I personally care, I've probably got enough karma to see everything.