I think there is an obvious and natural cleavage plane which divides the good and useful part of religion from the part which we should get rid of altogether. That is the plane which separates religious beliefs from religious organizations.
Religious beliefs are personal.
It is difficult, if not impossible for one person to explain his beliefs to another person so that the second person really understands exactly what those beliefs are and what those beliefs mean to the life of the individual. I think it is fine and good to discuss beliefs among ourselves as long as both parties are willing, and, the purpose for doing so is for learning and not for conversion or proselytizing. All of the evil associated with religion comes about as a result of forming organizations whose express purpose is to shape or otherwise control the beliefs of individual people. History is rife with the successes of such organization, and, with the untold misery they cause once they inevitably achieve a measure of temporal power. It is almost without exception the animosity between different religious sects that has been fomented, encouraged, and supported by powerful religious organizations for centuries.