As each individual cell in our body has a finite existance, so too do we. As do we, our planet also has a finite existance, as does the sun, the solar system, the galaxy and the universe.
Lets keep in good shape and live as long as is practicable. For our children and our childrens children. Pass the torch of life to the next generation.
Burning fossil fuel for the planet is like smoking cigarettes for ourselves. It accellerates natural death.