I have believed in free will for the longest amount of time and wish to show a simple example behind my rational.
Picture, if you will, a bridge, your standing in the exact center of this bridge. To your right you recognize the intoxicating aromas of food yet from the left comes the same smell, the exact same smell. The point is that to your left and to your right, equal distance apart. The tables to your left and right are covered with exactely the same amount of food, everything is the same. What would you choose? Personally, if there indeed was no free choice you would be stranded in the middle of that bridge for all eternity. Some small trick of our mind would tell us that one side is superior, even though they would be exactely the same. So you would move to that end, no free will? Perhaps you could argue that you were destined to choose one side, well what about when a man humms to himself or a woman kicks up her heels or even makes chewing noises, why do this? Do these habits have any impression at all over the universe, it must be something more, something free...
As for what, contemplating on God's design for us? I content myself with the knowledge that human minds are finite, Gods infinite, thus I couldn't begin to comprehend the whole design let alone imagine some piece of it, yet it is still fun to try. But in this world of lost innocence and vice could we ever really imagine the nothingness in which God thrives? Could we ever comprehend what we are here for? A design of sorts, a world of beauty and on it humans, the only creature distressed about it's position on this planet. A rock is content with being a rock, the human is never content with being a human, however, could that be wha a human is? A creature designed specifically to seek without finding? To ask without realizing that an answer has already befallen us in the question? To know yet to lose that knowledge in our own mortality, especially our mortality for the truth?