I'm scared I'm going to end up alone in life.

One of my teachers said that no matter what we enter this world alone and exit this world alone. I don't know if I excatly believe that. We don't enter this world alone... what about the human being that is giving birth to us? Or the doctor and hopfully father in the room help the woman giving to us? We aren't alone from the beginning at all; if we did begin alone I don't excatly think we'd live then. We need our mother most of all to take care of us when we're born.
So is this why we spend most of our life searching for the "right" person to exit this world with?

I don't know, it's just a thought.