If GOD were to get mad at us should we disobey him, then, wouldn’t that make him a dictator?
Freewill is something that drives us to choose and face results of a situation. From those results we learn. What we learn we apply in other situations and face more different results that expose us to more ‘new’ knowledge which increases our experience. We use this experience to achieve what we desire and reach our goals. The kind of goals we set for ourselves determine the kind of human beings we are. The thought behind the goals determine our nature and the ability to stay on track defines our determination. All this characteristics constitute a person as a whole.
So freewill does exist if we believe all the above characteristics exist. Otherwise we have no right to judge anyone for being what they are because they are destined to be that way!