> I wish people like Ginsburg would just quit when they are obviously incapable of doing their duty. <
The Founders made a few mistakes when writing the Constitution. One of them, in my opinion, was not having a mandatory retirement age for federal judges. 80 would seem to be about right.
If they had put a limit on the age, like 50 years old, many good judges today would be way beyond such a mandatory retirement age.
Some aren't even appointed until they are past 50 years old.
People didn't live near as long back in the 1700s as they do today.