@Emu I'm over 60 and still have all my faculties, I can assure you. Thirty-plus years ago, it was hard for me to imagine what I would be like at 60 but its actually not different, at least from the life of the mind perspective. I think your position is ageist and is itself generational thinking. Nevertheless, I have favored term limits for many years, including when I was young. The 25th Amendment was enacted and ratified to address Presidential incapacity after President Wilson became mentally incapacitated and his wife took over the office when no one was legally able to remove him.