Why should you use minerals in moderation?

Minerals that lie deep in the bowels of the earth are deposits of either accumulated materials during the Great Explosion, or the remains of early animals. These fossils took a long time to form, gathering in one particle by particle. Now, humanity is depleting natural resources at an enormous rate, and it will take too long to restore them. Either humanity will use fossil resources in moderation and with reason, or very soon, they will run out.