In the generation ahead of me I still have my mother's sister and father's brother. Makes you pause and think. Your perspective keeps changing as you get older. Older people buffer you from the reality of your own mortality. At least the only dementia was my mother's and her mother on either side of my long-lived families and my mother got hers ten years older than her mother did. I'm genetically programmed to live into my 90s mentally sharp, which doesn't mean I will; shit happens. I mean when there is no apparent male-pattern baldness in any of my relatives and ancestors to speak of and I could use a toupee made from a bear skin . . . --well, its more vegetables and less meat. Uck.
Indeed. I am a pater familia. No one between me and the Brink. I am next over the edge or my wife.,
So it goes. Since it is inevitable I don't worry about it.