All Human suffering is caused by Humans not flowing with the Natural Flow of the Universe.
In the human NOW humans tend to buffer them self from the flow of Nature many times with Forms of protection both Human and Physical.
Humans then wonder why when Nature flows its natural course that is Nature is so cruel
It is not nature that is Cruel it is the forms that Humans have constructed to attempt to control Nature that are human made that is causing the suffering
In other words we have seen the problem and it it is in most cases us