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’m American and this is how it was when I was in college and went to parties. I rarely, if ever opened a beer bottle with a bottle opener. My bic lighter was the most common tool, but as you said, learning how to improvise with whatever was on hand was key. It was a proud day when I found that the trucks on my longboard had a sweet spot for cracking beers open