does playing the quitar get you laid?
art is a cultural evolution but it has influence our genetics. sometimes, those who are artistically talented will breed more than the more athletically inclined. thus the cultural has influenced what genes get passed on. do preist get laid more? (sorry. had to insert the obvious joke.) but judaism requires marriage for their religious officials and all but shuns ordinary followers who don't reproduce (how else will they be numbered as the stars?). humans are interesting creatures. our intellect and communication skills allows us to surpass 'mere' genetics. religion may or may not have any evolutionary bonus, but it is one of the obvious responses to the very same question we ask when receiving gifts (on christmas?) "what else?". humans question their environment. herein lies the source of religion, not in some desire to breed.