Of the major religions, none of the judaism-based ones (judaism, christianity, islam, with any variation of any of the above) have ever seemed interesting to me.
Ouch. I will rephrase the question if that's okay. Which one do you think is most problematic? My answer to that would be that any faith that takes on a cultist flavor in which women, children and even men are abused extends beyond the pale. As a deconverter some degree of comity is understandable, but I draw the line on what I would call severe abuse.