What's your theory? Why do you think we are here?

I'd love to hear peoples stories on why/how we got here? I believe we are a specie of animal just like everything else. I don't believe in Adam and <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> or anything like this. Sometimes I do think we are controlled by something out there. Over thousands and thousands of years we have been puppets. What's your thoughts?