The Size of Major Religious Groups, 2012: Christianity 2.2 billion 31.50%; Islam 1.6 billion 22.32%; Secular[a]/Nonreligious[b]/Agnostic/Atheist 1.1 billion 15.35%; Hinduism 1 billion 13.95%; Chinese traditional religion[c] 394 million 5.50%; Buddhism 376 million 5.25% these covered 93.87% of the world’s population. Do you think 1.6 billion Islam which stays in the 2nd rank are all bad? If they are I believed there would be a new round of crusade war! To blame someone being stupid without knowing each other’s background is that wise? When disagree with one’s comment the right way just shows information to support the counter idea with polite words.