All this connectivity to people, even just the opportunity to be able to connect with people reduces distance and turns the concept of people coming and going into a thing of the past. Now you can find people on social media- people you last interacted with long ago. Even the possibility of this reality makes it difficult to grasp that concept. In a way, people no longer "come and go" in the sense they used to. Social media is terrible for coming to terms with loss and distance in relationships.