I was thinking about that when I was dropping my 6 year old off at some hobbies earlier - it’s pretty much expected to have learned how to ride a bicycle before starting school, and it massively expands the area you can go to by yourself. When she went to school by bicycle she can easily make a detour via a shop to spend some pocket money before coming home, while by foot that’d be rather time consuming.
Quite a lot of friends from outside of Europe either can’t ride a bicycle, or were learning it as adult after moving here, though.
edit: the high number of replies mentioning “swimming” made me realize that I had that filed as a basic skill pretty much everybody has - probably due to swimming lessons being a mandatory part of school education here.
I can’t help but commend the legitimately useful comment above me, but also, yes.
Yes, swimming is more complicated than I could possibly understand because I knew how to do it before I knew what I was doing. I’m a native English speaker, so I understand privilege, but swimming seems like such a primal thing to not be able to perform. I have a relatively close friend who can not swim and is scared of open water. It’s weird to me. Maybe there’s a privilege to swimming ability in America, but he’s a white dude, so it’s weird.