Touch is a part of the physical closeness of two people that we cannot achieve at a distance. For this reason, touch gives us the sense of connectedness with people and with our environment.
Children require loving touch in order to develop socially and physically. Depriving a child of loving touch is seen as neglectful. Psychologist Harry Harlow famously studied baby monkeys who weredeprived of both food and the touch of a mother and then had the choice of food or touch. The poor, lonely, baby monkeys chose touch over food. Humans are no different in our need for touch.