I forget who first said this, so feel free to attribute it to me if you like, but there is a theory that religious leaders and preachers like this get to live such long lives is because 'God' wants to put off having to have the gits under his feet for as long as possible.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'