“...there have been a few Supreme Court Justices that just wouldn’t retire.”
For an example, look up William O. Douglas. For sheer liberal arrogance, he makes RBG look like a schoolgirl. Douglas served longer than any other justice (36 years) and was famous for antagonizing his fellow justices. Forced to retire following a stroke, he continued to hang out at the Supreme Court building, a cantankerous old coot brandishing his cane at critics.
Douglas was perhaps the worst example of what lifetime tenure on SCOTUS can do to an entire nation.
Which Justice was it, (Warren?), who was so far gone that it appears he did not even participate in his clerks writing of his opinions for several years?