Clearly you just have to look at the history of Religion and it is obvious people are divided and confused. Without interfering with free-will, God could easily solve that problem. What do you think his reason is for wanting us confused?
You can say He doesn't want us confused, but I know better. If he didn't want us confused, he would speak up and answer our questions. For one person, the truth is Judaism. For another person the truth is Atheism. For another person the truth is Christianity. For another, the truth is Islam. For another, Mormonism, for another the truth is Polytheism. And the list goes on and on.
God clearly wants us confused or he would speak up to us and let us know the truth. There is a small percentage of people that God wills have enlightenment and understanding.