That's a response to an opinion I don't hold, but I could have been more clear. The claim I'm making is about the fitness to hold office. Specifically: septo/octogenarians belong at the ballot box, but not on the ballot. If you'd like to dissuade me of something, that's the meat of it.
What is the justification? Why can someone vote for a future they're not likely have to endure?
We don't allow under 18s to vote, so clearly some age restrictions are legitimate.