Some people do. Although, I have a difficult time understanding how someone can believe in both. They completely contradict each other. In my opinion evolution is completely impossible, a big explosion could nver have created this universe. And then conveniently life started on this planet...
Yeah, free will gives us the ability to rebel against God, but it also gives us the ability to choose to obey God. Really, it is only after having chosen to follow Him that you can rebel against Him. But that doesn't mean that you will be 'tossed out of the house' if you rebel against Him. God...