muhammad or whomever started it wanted constant prayers because then that shows you own someone's mind. It's hard to get slaves to behave. You can constsantly watch them and whip them but that is hard work and they always run away. Religion was created for this. But if you're so worried about islam you should realize USA is already 70% christian and they all pray every day. Not to mention kids standing and giving the pledge of allegiance each day, which symbolized loyalty and brainwashing at a young age.