Joe,
I believe that our God will allow us - His created subjects, to question Him concerning the way in which He has done things. He WANTS us to understand, so that we can love Him unreservedly. With time, and experience, and revelation - the "WHY" will be answered. In the meantime, for me, just knowing that His Son became one of us, and that They felt the pain, is enough to keep me to trust Them.