I've heard the statement many times that veganism, vegetarianism, or environmentalism, is like a religion. And it always makes me wonder: if the person who says it thinks that religion is good, isn't it logical to think that anything like it would also be good?
The statement that, "it's like a religion", reminds me of someone who has been known to say that, from time-to-time, on the radio. The person I'm thinking of lives a life that is consumed by politics to the point where politics is like a religion to him. (People who live in glass houses shouldn't throw stones.)
Many things in life can be like a religion, even economics. The chairman of the Federal Reserve Board is like the "Pope" of economics and the rest of the board members are like Archbishops. They have their occasional meetings to set monetary policy etc., and we are mere mortals who worship at their feet.