Hmmm, how do we unpack that, Wheeze?
Your second line reminds me that someone once told me that a tree is a device used by a seed to propagate its genes. The human equivalent of that is fairly obvious, but it's a rather bleak view of human existence. Indeed, a view that is rather likely to cause Depression, especially in single, childless people. [By the way, Leaf, how are you getting on these days?]
But you did also say, "To Live, To Love, To Learn, To Leave a Legacy." There is more to life than propagating your genes. It may still be painful at times (rather like fell-running!), but there is a purpose in life, even when we are unsure what that purpose is.