What are we here for?

As another year arrives, I ponder yet again the meaning of our lives here on this earth..What are we here for? To live? To love? To create meaning in our lives? What does it all mean? Do we really matter? Do all our efforts matter when we're dead and gone and we've turned to dust? People talk about legacy..what's the use when we're not around anymore? Even when we are, how long will it last and in the bigger scheme of things is it all that important? Maybe we're just a freak of nature, given consciousness and then cruelly put out to survive and will ultimately suck our world dry and kill each other...I feel empty...I try to fill my life with more and more learnings, more things, more people, more love, more health, more everything but it won't take away the insecurity and the nagging feeling that it all means nothing in the end...We all mean nothing...