Well, I'll restate that it is my opinion that the meaning of a person's life is self-defined. It's one of the glories of being human that we get to choose our values and our goals. Our values are initially established during our upbringing, not purely by what we are taught or told but more importantly by what we see in other peoples behavior, largely that of our family and peers. As we reach maturity we become increasingly capable of analyzing these values, selecting and altering them to fit our personalities. This is most evident in our teenage years as we strive towards independence and begin to identify with our peer groups more strongly than our families.
Speaking personally my values and purpose are many and varied. If I had to define it succinctly I would say that my life's purpose is to experience, appreciate, enjoy, and understand life, other people, and the wonder of the Universe, and to help others to do the same.
~Raithere