If we know how much passive violence we perpetrate against one another, we will understand why there is so much physical violence plaguing societies and the world.
To every instant there is a correspondence in something outside time. This world here and now cannot be followed by a Beyond, for the Beyond is eternal, hence it cannot be in temporal contact with this world here and now.
The traveler has to knock at every alien door to come to his own, and one has to wander through all the outer worlds to reach the innermost shrine at the end.
Without birth and death, and without the perpetual transmutation of all the forms of life, the world would be static, rhythm-less, undancing, mummified.