After countless hours of thought and reading the best answer that I could possibly contemplate to the question
“What is the purpose of life” is “A life of purpose”.
What purpose ? It is individualistic and only the vibes that you get from YOUR Heart can guide you towards your purpose. And note that the “Purpose” is not just the destination but also the journey.
Ask yourself – What do you want ? What do you really want ? And WANT it with all your heart and let the WANT guide your actions. The Law of attraction will take care of it and you will get what you desire, sooner or later.
I also suggest another post that relates to the topic. I really liked the way it was perceived by the author. – http://alistairpott.com/2010/03/30/purpose-of-life/
Cheers and Wish you the best in your Quest for your purpose in life.