Human beings are often described as social creatures. We are almost never found alone, and even when we are physically alone, we are constantly thinking about other people in our lives. When was the last time you thought of a plan that did not include anyone else?
When was the last time you saw a dream in which there were no other people but you? It does not happen that way with us. Everything that we do consciously or otherwise needs to have other people in it. That is the way nature has ordained us to be.