I'm one of those borderline people who could have gone either way. My parents used to run before we were born and holidays were always camping with walking so kind of outdoors.
I first got into Judo at school then tried activities outside school like ballet, gymnastics. We also lived in a suburb where you just went and explored on bikes, lots of concrete for roller skating, patio for ballgames, garden space for makeshift badminton. We had a large leisure centre nearby so swam about once a week outside termtime.
Then at secondary I scraped into the netball and rounders teams. Weds afternoons was school sports only, we had games on Saturdays. PE was quite varied incl. trampolining, we had a pool at school. Later on you had to choose one extra curricular activity a term and they had things like dance, horse riding. Also school sports day, everyone had to participate in a sport whatever it was. I liked that ethos as it means its not all about being competitive. There was a run that everyone had to do once, basically a form of torture.
A lot of the sport at private schools can be a bit elite-the cricket pitch was worshipped, god forbid you walked on it, and the football team were like literal gods.
As an adult I've been into yoga, cycling and swimming mainly. I've also done snowboarding, scubadiving, snorkelling, yoga, cycling holidays. I love an active holiday.