I think that modern man has two options here. He can either put religion aside or invent a new one. One more alike the ancient Greek one.
"The sole requirements for the Greeks were to believe that the gods existed and to perform ritual and sacrifice, through which the gods received their due...
But if a Greek went through the motions of piety, he risked little, since no attempt was made to enforce orthodoxy, a religious concept almost incomprehensible to the Greeks. The large corpus of myths concerned with gods, heroes, and rituals embodied the worldview of Greek religion and remains its legacy. (See Greek mythology.) It should be noted that the myths varied over time and that, within limits, a writer—e.g., a Greek tragedian—could alter a myth by changing not only the role played by the gods in it but also the evaluation of the gods’ actions...
From the later 6th century bce onward, myths and gods were subject to rational criticism on ethical or other grounds. "
