@Pronounce,
As you probably know "living authentically", was one of Heidegger's central themes. By that I understood him to mean "
being aware of the social conformities we might chose to live by", rather than acting automatically in a conditioned manner. So one feature of "being human" is "having choice".
Those philosophers who concur with the idea of "higher states of conscious" might assign Heidegger's "awareness" to such a state of transcendence. But the dichotomy of whether such states are attributable to physical or mental realms tends to be a non-issue...the dichotomy being too simplistic at such a level of analysis. Similarly, to attempt assign "art and beauty" to one side of that dichotomy is also simplistic, as in indeed would be an assignment to the dichotomy "psychological - social".
As humans with the evolutionary disposition to
perceive pattern/make sense of, we tend to try to encapsulate all our experiences under the catch all phrase "our existence". But rarely is that word "existence" subject to analysis in pragmatic relativistic terms rather than absolutist ones. So asking "what if humans exist as...."is couched in terms of
absolutist/naive realist concepts of "existence" as though anybody could definitively "know". Relativistically though, "spiritual existence" just
works for some and not for others...end of ontological discussion.