One intimate mental connection is wonderful. Beyond that, I enjoy exchanging ideas with a variety of people, but this interaction is often more intellectual than personal.
I'd make a happy hermit.
Without knowing more, I'd say that the OP sounds like projection. People have trouble identifying with detachment, and mistake the open-endedness for self doubt, insecurity, lack of self worth, and the like. They don't quite get how comfortable that open-endedness is, and how little of the self is invested in recognition, or a definite end result.
There is a certain predilection toward existential depression; this is not induced by a lack of people. Heck, most people make it worse.