The political thinker who first intuited the danger loneliness poses for politics is Hannah Arendt. Arendt asks after the "basic experience which finds its expression in totalitarian domination." She names that experience loneliness. Totalitarianism, she argues, "bases itself on loneliness, on the experience of not belonging to the world at all, which is among the most radical and desperate experiences of man." For Arendt, mass loneliness leads to a crisis of meaninglessness and purposelessness. Amidst a pervasive loneliness, masses seek meaning and certainty in ideological movements that replace the complexity of reality with ideological fictions that are more adequate to the needs of abandoned human beings than is the complex realities in which we live.
Only human contact, human touch, common human action can ever do that!
(2) - https://allthatsinteresting.com/why-we-kiss