"I have often thought so myself, and wondered why." "Purpose--" I began.
"Utility," he interrupted.

"This body was made for use.

These muscles were made to grip, and tear, and destroy living things that get between me and life.

But have you thought of the other living things?
They, too, have muscles, of one kind and another, made to grip, and tear, and destroy; and when they come between me and life, I out-grip them, out-tear them, out-destroy them.

Purpose does not explain that.