The Utah Republican and 2012 G.O.P. presidential nominee, 76, said he would step aside to make way for younger leaders and strongly suggested that the president and former president should, too.
This is the problem. The moderate Republicans that didn't support Trump are looking at retirement. They are marginalized in their party. The replacements likely will be further right.
The country did far better when you have moderate and capable leadership on both sides.
What we've had for over 40 years is a moderately right wing party (the Democratic Party) and then the Republican Party, which even under the guise of "moderates" like Romney want some pretty extreme things.
It's also not about unfit. Being old means you don't have to care what happens to future generations- you'll be dead by then and you can leave a wealthy inheritance for your brats to squander after you're gone. Making decisions that you'll never have to face the consequences of.