AIBU to think that this isn't actually all that unusual in this day and age when people have moved away from their families, have smaller families and work such long hours or have a long commute? At the school gate people (pre covid) seem to stand on their own and not engage with others and children going round to other's houses to play seems to be a rarer thing than it used to be a few years ago? Mine were always in and out of other's houses when they were younger as we lived in a road with a lot of similar aged children but that doesn't seem to happen any more. Obviously that's before this year and covid.