Here's a riddle not that difficult to answer: What is mankind's ultimate fulfillment? The answer clear to me is love. If everyone loves as Jesus had commanded, there would be peace in the world. Since God is love, then God is our ultimate fulfillment. Perhaps one reason people hesitate to love is the realization that they could lose their lives if they practice it in this evil world ~ look at how Jesus lost his on earth. But we are going to die anyway, so it'd be far better to lose our lives on earth than to risk losing eternal life later.