I will like to answer this question from this perspective. Let me start by saying the only thing that's shaping the direction of this world in whatever direction that it is going is our insatiable quest for something that will give us a sense of importance. As a result, we tend to involve ourselves in a lot of things to the point that our mind is becoming divided by so many things.
At this point, it will be very difficult for us to live in peace because our mind is on so many things. Also, for every step we take in this life, we are taking a big risk, even when we sleep, we don't sleep in peace. The only time we have peace is when we die because you don't have anything in your mind anymore, and your quest for something you are aspiring to become ends the moment you die.