Answer:
religion is the main factor units prevention from widespread acceptance.unfortunately also because much of the good of religion helps people in a psychological sense, their mental health in other words. religion has nothing to fear with psychology. psychology and religion can help people. deep held belief , as in religion does not say , if enlightened, no , don't go get well psychologically it says go be well be at a peaceful vigorous well lived life , because that is gratitude to a higher non corrupt power , even though unseen. biology had been a little a hindrance although biology is true science...the hindrance came from strict physique, aka medicine as it's practiced , professionals inpast did not accept psychology as a valid science. that is not so much now.