Question

why humans die in old-age?

Answer 1

There are various ways of shuffling off this mortal coil, but people actually die from injury (such as a fall or car accident) or disease (such as cancer). No one dies of old age. Usually when a person is said to have died "of old age," it means that he or she succumbed to one of the diseases common in our later years.

Answer 2

humans usually die in old age because the capability of their organs are get exhausted or due to some disease