give and take

I have recently begun to wonder what long term mark I will leave on the world. As someone who has made a habit of looking at history and many of the amazing people that existed and then looking out at the stars and seeing how finite our general knowledge is. What impact do I have? Does it matter? Should I care? Can anyone really have any true long term impact or is that just an illusion that we continue to worship for our own egos. Should I be happy to wake up in the morning is that enough? or is there more?
Just what I have been thinking about.