God has a plan for everything he created he did not just create things for creating sake. Everything has a purpose for its creation or existence. The animals have a purpose on earth here and other things of the nature has a purpose for their existence, for instance, if no herb-bearing or seed plants or crops were created by God what are we humans going to be eating. So the purpose of existence of all these plants are to be of food for man so that we shall not starve.
God created man in his own image according to the bible. He created only man in his own image and he did that to only man and not any other creature so he has a purpose for doing that and we humans, also have a purpose for their existence in life so that is why we are created and our main purpose in life is to worship, honour and glorify God's name. And another purpose is to become successful and multiply on earth.
In conclusion, our main purpose here on earth is to bow down before our maker, God and serve and honour him and him only shall we serve.
