Science cannot Explain the purpose of your existence.
There are a lot of theories about Evolution of mankind that science has proven, and also give logic for it but it simply can't determine why those evolution actually happened. Be in Darwin's theory on evolution or Mendel's theory on genetics, Science gives a beautiful explanation how it happened, but can't explain why it happened.
This is where and this is why religion thrives, giving us a belief of why we are on Earth. So, both religion and science are, though somewhat contrary, but still indispensable in the lives of human beings.
Science explains beautifully, through Newton's laws, that 'every action has equal and opposite reaction,. But what we tend to overlook is that it applies to our own lives also. Our future depends on our past, but not entirely, and that's why karma comes into play.
Karma depicts our luck, how good or how bad it is supposed to be. And at what time it is supposed to play a role in our lives. So, one cannot ask reason for everything in life, and still if you ask me why you do exist in this world, the answer is simple.
You are here, because you are destined to be here. Try proving it otherwise!
