Recycling Earth as a big recycle bin. It recycled everything, so far, and will recycle us, humans, as well…
Purpose Humans will disappear from the face of the Earth the moment that they entirely forget that sex is meant for procreation, not for fun. We are very close to that.
Undue credit Consider this: If Earth is flying through Space, all of us are actually flying. Man is prone to taking credit for someone else’s achievements.