Yes because you murder those who leave Islam. You live in poverty corruption constant war economic repression and have some of the lowest education rate in the world, no wonder why you still live in middle ages, hated by the rest of the world and want to commit violence everytime you hear about someone leaving Islam. Plus, you might currently be the fastest growing due to birth rate but believe me in 20 years due to the massive problems islamic societies are facing (hunger, corruption, overpopulation, lack of education, war, etc) your birth rates will fall drastically. But hey, I'm not expecting a teenager to understand how the actual world works. Just stop listening to your ridiculous mullahs and accept the fact that people leave Islam.