From Adaptive Curmudgeon, Hobbits! Really! Part II:
Tolkien’s Hobbits fought to resist power. Career politicians wallow in it. Too much power makes politicians hollow and disconnected. Lacking anything else, they cling to power until they drop dead. A defeatist mentality of emptiness. If you’re wealthy enough to retire but hold elected office until you die in old age; power has destroyed you.
Conservative Strom Thurmond and liberal Edward Kennedy are egregious examples. One died in office at age 100 after 47 years in office. The other at age 77 after 46 years in office. Virtual opposites in politics; yet they both clung to power until their dying breath.
Dilbert, from December 21, 1990: