I haven't had to retest since I got mine at age 15 and I'm in my early 50s. However I am for retesting anyone who has more than 2 accidents in a year. When these old people start losing their reflexes most just keep driving but get bigger tank-like cars. My Grandfather did that. Seems like the worse they drive the bigger weapons they choose.

Personally I have never had an accident, although a deer jumped on top of my car once. I was driving on a back dirt road in VA during a snow storm at night (doing about 15-20 to keep from sliding in the ditches on both sides) and a deer jumped off the hill beside me right on the top, bounced off my hood, and kept going. Cost me almost $1k to fix the damage myself - I didn't want anything happening to make my insurance go up. I pulled a large fist-full of hair out of my crushed headlight assembly and still have it in a mug on my bookshelf. That was in 2007.

Note - Trump took a cognitive test while in the White House last time and aced it. He shouldn't have to do another one unless we see the same stupid behaviors we see with Biden (which I seriously doubt).

Not due to age. Annual road tests after an agreed on age would make the streets (and parking lots and sidewalks) much safer.