I've been thinking a lot about this. What age would you let your child go out on errands by themselves? When I was 7, in France, I'd walk a kilometer by myself to go on errands like going to the baker. I have a friend living in Tokyo who let his daughter go on errands around 5 years old (but Japan in particular is very accepting of this). We live in Hong Kong, here, I think the age is more around 8 or 9 years old.