Religion is both art and science, else it is garbage and stupidity.
Why can't it be its own thing?
Science has come a long way since Antiquity. Many use the term indiscriminately to refer to humanities (Geisteswissenschaften
), the "liberal arts" and what Germans call Naturwissenschaften
(physics, chemistry, biology, etc.) or mathematics. Philosophy, for instance, is not science.
Does religion use the experimental method to verify its claims? Is it restricted to the empirical sphere? Are the theories it operates with falsifiable and periodically replaced by new ones? If you call it a science, how come tradition, beliefs and dogmas play such a significant role?
IMO the worst thing that could happen to a religion is for it to be turned into pseudo-science. See scholasticism or scientology...