I got my first "10-speed" derailleur bike in 1962, when those were very rare in the US, and promptly started taking 70-mile, single-day round trips at age 13. I'd already been doing nearly that distance on a clunky old Schwinn-style, single-speed American standard cantilever bike.
When my older friends started getting their car driver's licenses before me, and we'd all take weekend drives together through the country, I'd be giving the directions, and they'd ask me how I knew all these rural back roads, so far away from home. And when I told them this is where I rode my bicycle, they wouldn't believe me.
At 15 I took up tennis, and for 2 years I was our country club champion for my age group. And sometimes I'd pedal 20 miles to the club, win my match, and then pedal 20 miles back home. I was anything but a gay wimp.
Then at age 19 I had a terrible motorcycle crash, and my life changed. Disfigured & mentally impaired, I enlisted in the US Army in despair, a form of indirect suicide. Tennis & serious bicycling were forgotten.
But bicycling is still something I attempt, even disabled now. And this past November I pedaled 165 miles down to Key West for charity. I didn't practice or get adequately ready, just relied on what residual ability I had left, from all those years ago.
I've never been "pure" anything, but of all the things I can still barely do, I guess bicycling would be it. And given my age & limitations, I may be as "competitive" as the next guy.