Some might say It's the worlds natural cleaning. The circle of life. Others might say we've served our purpose and it's time to return to God. But, take this from somebody who knows death very well, it really doesn't matter why people die, because everybody does. And everybody will. That's all we need to know.
Because we were born thus at some point, just like all other biological beings, we'll die. No worries, it happens to everyone. If you're really stressing about it though, get involved in your local Church. If you've never been spiritual, just think as dying as being just like before you were born! Either way, that's not so bad.
This is an unanswerable ask question because anyone answering it would never have experienced it or talked to someone who has experienced it. You only can learn the true answer when the time comes. But if you exist now in consciousness, you've always existed, and always will.
we either get too old or sick or murdered...Most of the time,we will get cancer,such as lung,breast,brain....The circle of life too....We are born,we live,we die....The comman age of life is 79 or older....We can die anytime, anyday,any year....You might die today,Next year,In 20 years.. .You will never find out..After you die,You have a new life....Its call.......Heaven!!