If you want to believe there is a deep complex purpose to life then all the power to you. But really, in my mind, it's pretty clear, as it is in yours. So, it's all about what you believe and what you put your faith and time and passion into. I believe my purpose of life is my family. Everything works for that. My career and my success is for my family. To make my grandfather proud, to feed my seeds. To have fun and see the world, that's for my family. What good is it if your seeing and experiencing these things alone?
So, yeah. The purpose is what you make of it through your beliefs and your actions. It's sad to see people waste it, but it happens.