Great answer. The evolutionary definition is always useful to think about, and I've thought about this question a lot too! I've come to the same conclusions - that we were created and built to survive, and that our existence is most likely at least unknown to us within our ability to know. However, if and when you accept that we exist to survive and to prosper, then it can make life a lot more exciting! There should be pride in living a life aimed at prosperity imo.