Why Do We Feel So Alone?

Here is Walker Percy's opinion, from The Message in a Bottle, p. 24:

By the very cogent anthropology of Judeo-Christianity, whether or not one agreed with it, human existence was by no means to be understood as the transaction of a higher organism satisfying this or that need from its environment, by being "creative" or enjoying "meaningful relationships," but as the journey of a wayfarer along life's way.

The experience of alienation was thus not a symptom of maladaptation (psychology) nor evidence of the absurdity of life (existentialism) nor an inevitable consequence of capitalism (Marx) nor the necessary dehumanization of technology (Ellul). Though the exacerbating influence of these forces was not denied, it was not to be forgotten that human alienation was first and last the homelessness of a man who is not in fact at home.