There is a humorous but persuasive argument from Emmanuel Kant that is call "antinomies". For any range of views about a given subject, only one can be true but they all can be wrong. There is no objective technique that differentiates one religion from another and this also involves different flavours of the same religion. Sunni versus Shia, Catholic versus Protestant, a plethora of variations in the Vedic religions of India and so on.
By itself religious views and related practices bother no-one and have often led to a range of people who have done good work for others and here I can think of various Catholic religious orders sworn to poverty and charitable works, our Jewish friends have a system of charitable works built in Judaism, many of those of the Muslim faiths practice charitable works in accordance with their beliefs and this applies to most others as well.
The wheels fall off when religion is mixed with zealotry and power, be it the Inquisition in Europe and especially Spain, the pogroms in early Soviet Russia with an atheistic flavour of zealotry, some of our Muslim friends who wish to convert by the sword and any other combination of religious exclusivity and political power that inflicts itself on other who see the world differently. Over time the most tolerant societies were highly successful as they utilised the skills of many different religious and cultural groups to form a viable society but over time they also were destroyed by religious zealotry and exclusivity.
Early to middle period Al Andalus (Moorish Spain) was highly successful but came unstuck with repeated invasions from Islamic forces from North Africa. Norman Sicily was a melting pot of different cultures and religions that thrived until the last of the Norman line died out and it eventually came under the rigid control of the Papacy.
What I am hopeful about is that Andy will stop being tempted by the devil biting him on the ass and give up on the idea of being "like God" sitting in judgement of others that vary from his own religious views and supporting inflicting them on others. It would be most unfortunate if through heresy and apostacy he was cast into the lake of fire if his name is removed from the Book of Life.
