As someone who used to be religious, I do find a commitment to communism to have a sort of "religious" aspect to it (meaning that in a positive way). Ultimately the whole reason I'm a communist is I believe in the fundamental value of individual people and believe we're all deserving of dignity. I want to see oppressed people lifted up. I want to live in real community with the people around me and wider humanity. I just want a better world. These are things my former religion would pay lip service to but in practice pursued the opposite. Communism meanwhile is actually capable of delivering the goods.