Billion Roles: Explore the Colours of Life

My First book where i want to describe life on earth and its purpose, why billions of organisms come into this world see, feel, live, love, care, work, help, laugh, cry, move on, die, win, lose. why greed, anger takes over our minds. We play a role in life a role we create on our own mind, set goals, reach our limits, because that is the role of life . each organism on earth is playing its own role, in this universe everyone has a role, its like a giant movie screen but who is watching ? there are some questions that i am also not able to answer but i will try my best to give the best answer possible.