I think it depends when you were born. In the 70s/80s/90s it was very common to get phone calls (on landline phones) at all times of the day from family member

I think it depends when you were born. In the 70s/80s/90s it was very common to get phone calls (on landline phones) at all times of the day from family members or friends. I remember being on the phone to friends from school for hours in the evening, I don't even recall the subject matter of the conversations but it's just what you did. Then as more and more people got on the internet, using other communication mediums like IM, IRC email etc became more and more common, and nowadays I'd find it very unusual for someone to call me out of the blue.