If Trump is solidly re-elected, as I expect he will be, this is going to be the main reason cited. A younger, more energetic candidate - even if further to the Left - would have given Trump much more of a challenge.
This reminds me of the hopelessness I felt in 1996, when the GOP put up a Dole/Kemp ticket to run against the incumbent Clinton. What an opportunity lost to unseat that jerk and kill Hillary's budding political aspirations. Unlike Biden, Dole was basically a good man, but definitely well past his prime (Viagra ads notwithstanding) and he just oozed that career politician "my turn" vibe that turned so many young voters off.
“If Trump is solidly re-elected, as I expect he will be,...”
From your lips to God’s ear.
We pray three times a day for the president’s convincing win.