Of all the "weird" things we do as parents in euro/anglo nations, sleeping arrangements seems nowhere near the top. IMO, the top "offender" is over-scheduling kid's activities. So many kids in my area have their days booked solid with sports, academic tutoring, music lessons. Approaching zero free time to enjoy being a kid. Edit - and this isn't really a western thing, "Tiger Mom" and similar probably pre-dates this…
I volunteer with a U.S. Scout troop. I see boys that don't know whether or not they can go on an activity/campout because they have to ask their parents if they're free that day/weekend. I try to tell them their old enough (most are teenagers) that they should start deciding for themselves what activities they participate in. Most all of them just seem apathetic. I'm sure their parents are trying to do what is best f…
My son (now 26) always had summers free at minimum. While he was younger, he did go to a YMCA outdoor "adventure" day camp at a nearby lake park. Once he was in middle school, he stayed home. Sports 2-3 seasons, but he got to pick which one he played and never the crazy travel league stuff. In high school, he was free to do what he wanted (football for 2 years, guitar all 4, and a mix of rec league basketball and volleyball when he felt like it). Always plenty of time to ride his bike, play at the park, run around with friends. Starting in middle school, he'd often disappear across town on bike of skateboard for hours at a time. School was 2.5 miles away and he often opted to ride his skateboard instead of the bus.
I see kids today where every free moment is booked with stuff. All in some sisyphean effort to get into Harvard or something. I mean, sure, I get a desire to go to a top name uni, but the changes of little Johnnie getting in, regardless of extra-curricular, is so small that all the effort seems mostly wasted to me. I "only" went to UVA and turned out fine, IMO, so maybe I'm biased. I dunno.