No, I don't believe in fate or destiny either, no divine purpose, no mysterious reason for being, no metaphysical plain that we exist on spiritually.
But that's not the same thing as believing that our lives have a purpose. Some people's lives have no purpose, because they choose to live that way. My life has a purpose - the purpose I choose to give it, and that purpose changes as I grow and age. My purpose at the age of five was to play and have fun. My purpose at age thirteen was to get through a day of school without blushing horribly and saying something stupid. My purpose at the age of 26 and onwards was to care for my children and do the best job with them that I could (that's ongoing, and probably will be one of my purposes for the rest of my life?). My purpose now, at the grand old age of 35, is to find out what I want to do for the rest of my life, for myself. I've got some stuff to do, a contribution to make, things that I need to say, people I need to help, and those small tasks are my purpose at the moment. What my purpose will be in ten years, who knows? I just enjoying watching all of the beauty unfold, in its completely random and chaotic way.
'God is such a God of order that there is really no reason to consider happenstance, chance, or coincidence.' It's so interesting to me that we all see such different things in the world - to me, so much of everything is all about happenstance, chance and coincidence. I see it everywhere :) And I love it.