In the biological realm, everything dies. Plants wither and fade. Animals feed on one another and eventually die. Men exercise brutality over others and all pass on. In the physical realm, everything goes toward disintegration.
Cars wear out, rocks crumble, the moon's orbit decays and the stars burn out.
The God of the Bible is a God of grace and mercy. He has the wisdom to know what He wants, and the power to accomplish it in a timely manner without violating His character along the way. But now, everywhere we look we see sin's effect. Darwin saw it clearly, but he denied the Biblical doctrine of the Curse. Not believing this, I see no necessity in the belief that the eye was expressly designed.