I am really struggling to answer this question. It can't be just be about free will. Natural disasters, accidents and diseases are the cause of many deaths each day. Dying without having a choice sounds like the opposite of free will to me.
In an environment where one has free will, there will inevitably be a certain amount of chaos possible. We wive in a world where we can choose to do evil to others and to hurt or even kill them. That means that Death must be allowed. The chaotic possibilities must exist in order for us to have real freedom of choice, with real consequences. Disease, natural disasters etc... are all part of the choice environment. Its fully rounded.
BUT
God gave us a map and a moral guide.
There is more than enough land to grow enough food on this planet. Why is it that people starve? In Africa for instance. That continent has arguably the most natural resources of any continent on earth, yet more people starve there than any other. This is because men hoard wealth for themselves.
If everyone followed Gods word in their behaviors, there would be no hunger, no poverty, no overpopulation, very little disease... There would still be some chaotic events, but we see in scripture that God does prevent those events from happening to a people whom he is pleased with. Still the fact of the matter is that we all will eventually die. Some will fall off of cliffs, or get sick... get eaten by a bear...
The vast majority of suffering on this planet is caused by men who have been given all of the natural resources they need, as well as the moral guide they need, but they choose to ignore what is moral and choose selfishness and greed.