If you think of it, religion is based on someone or something that existed that was real at one point in time or another. Whatever was real to the people of that time and culture to connect them to a feeling of a “higher being”, a “God”, “Source” or whatever you would deem it as. Most of the religions of the world have similarities teaching, faith, love, forgiveness and some stances of learning and treating others right with karmatic effects. Such as hell for being bad, reincarnation from past actions and reliving it in the next life, etc.
If you really study all of the religions of the world and how vastly similar they are to one another, take out rules and regulations, you would see the commonalities of all of them and they all really create you to be concious of your decisions as your living on earth and how you treat people. You can make your life a heaven or a hell. And whatever you put out you will get in return. From Shinto in Japan, Hinduism, Christianity, Catholism, Islamic, everything is intertwined.
Looking toward the basic principles of love, honor, humility, ambitions, integrity, helping others, etc. instead of judgement and condemning. Put your time and heart to guide your mind in the process of guiding your actions so that you can make it ripple for people around you instead of frivolous wasted energy on arguing about regulations and laws that are changed with time anyway and will soon fall away.