I, a 52-year-old man, feel this pain.
I ran as part of a semi-famous track club in 1977, ran my first road race in 1979, won state races in high school, scored points running for a D1 school, won road races as a drunk after, and had/have success in age group stuff and as a masters runner now. I've had periods where I didn't run much, ran too much, ran marathons when I shouldn't, and ran all-comers track meets just because.
And ever since maybe my mid-30s, I realized I was the weirdo I didn't like around me when I was in high school trying to win a road race, and some creepy old guy with sunglasses who didn't talk much was running away from me. I realized I'd reach the age where I didn't care, and I'm certainly there. But even though I don't care, it does bother me that I'm even WORSE than I was ~15 years ago. I mean, I'm trying to out kick the kids that those high school guys have now, at the Thanksgiving Day World Championships.
What is the point? I have no issue running most days in longish shorts and dad (running) shoes, but I look absolutely absurd when I show up at some dumb 5K in the shoes that almost went sub-2, and run 7 minute miles.
There's grizzly old tough guy, and there's weirdo who can't let it go. I definitely fear I'm more the weirdo.
Someday, a photo like this will make Rupp look, well, like this;
https://mgtvwfla.files.wordpress.com/2016/09/ap_9502250328.jpg?w=993