That of course is the title of a famous CS Lewis book. Here let me make two observations:
(1) For believers, suppose that when you die, you realize that all the bad things in your life steered you into the type of person you yourself wanted to become.
(2) Given that humans were going to experience some type of pain in the world, it was then necessary for God to endure agony Himself. So not only did God Himself suffer torture and execution on a cross, but He also witnessed His only Son being tortured and executed by evil men. That’s pretty awful. So God’s plan doesn’t conveniently place the burden all on the humans.