An Aged Tardigrade

I happened on a tardigrade. He told of places he had stayed, and sadly sighed. He spoke of the friends he had made, and the times he'd been afraid, and then he softly cried. He'd lived in Antarctica and Spain, the fiery desert and icy rain, and neither froze nor fried. He was old, in so much pain, and asked, "why must I remain?" before he finally died.