Why are we getting disconnected in a connected world?

We are able to get connected to people in any part of the world in a matter of seconds. Yet, it seems that the same power of connectivity is making us drift apart from the people near us.  We are so busy creating online relationships that we actually neglect the people next to us.  How did we move from having vibrant physical relationships to on-screen engagements? According to Merriam-Webster dictionary,