Did you know that everything around you, including the very bones in your body, was once in the firey belly of giant star that went supernova way before our sun was even a twinkle in the galaxy. Kinda cool to think about. We are the product of one of the most violent, destructive processes known to the universe. Supernovae obliterate stars in a titanic explosion, belching heavy elements deep into the depths of interstellar space.
In 5 billion years, the earth will get swallowed up by the outer regions of our sun in its death throwes (sp?). Humans will be long gone by then. Personally, I only give us another 1000 years before we screw ourselves over completely. We're doing a pretty good job of it so far.