why are we here? what`s our purpose in life?

Hi! I used to wonder why on earth are we here for. I used to be bitter. I thought that it would be better if my parents did not marry and got me here. But as I have matured and learned to see that the world is indeed a wonderful place to live, I have come to my senses that I am such a lucky person indeed, to be able to experience all the things in the world. You see, there are a lot of adversities in the world, and we can not change that by a snap. So many things happen because greed comes to our hearts and we want things to ourselves. Humans become selfish. I am not an expert on this, but I have live a life focusing on the more positive side. As the song goes by Celine Dion, "Live for the one I love, Love as no one has loved, Give asking nothing in return". Here's a link for a more in depth explanation. Hope this helps :) http://www.purposedrivenlife.com/samplechapters/chapter1.aspx