We are given this human form of life not just to work hard like the swine or dog, but to attain the highest perfection of life. If we do not want that perfection, then we will have to work very hard, for we will be forced to by the laws of nature. In the closing days of Kali-yuga (this present age) men will have to work hard like asses for only a scrap of bread. This process has already begun, and every year the necessity for harder work for lesser wages will increase. Yet human beings are not meant to work hard like animals, and if a man fails to discharge his duties as a human being, he is forced to transmigrate to the lower species of life by the laws of nature. The Bhagavad-gitä very vividly describes how a spirit soul, by the laws of nature, takes his birth and gets a suitable body and sense organs for enjoying matter in the material world.