I would just like to point out the defenses put forward against the problem of evil have not actually address the main issue of the problem. indeed the defense that has been put forward are not only excepting that there is a problem, but also give a resolution afterward. You see if God must have suffering in order to attain free will then you have limited God. The problem of evil doesn't say a mostly powerful God it says an all-powerful God, capable of doing anything. So if you were to say that God just can't make the world with us having free will with out incorporating evil then you have limited God. thus the defense(s) that have been proposed have not actually know if I'd the issue but merely came to compromise that God is not all-powerful.