Death, End For All!

With the head of a helicopter dragon flies Are flying with fluttering gossamer wings! It is happening before the rain comes And serves as a symptom of coming rains! Moths also come in large numbers before rains; It is a natural destiny for these flying creatures Like the delicate flowers they serve their purposes And meet with sure deaths within one night, yes! Likewise many land and sea creatures' fortunes End very early before they realize themselves! For the goats well fed before they meet their ends They also don't know and never bother about ends! What is the difference between these creatures And men in the world as far as their ends in deaths?