~ There is no cornucopia, except in myth.
Some of these materials are obscure to many people, like antimony and indium, but all are essential to our economy. How do you replace copper or aluminum? As we deplete soil and run out of the phosphorous to augment its lost nutrients, how will we feed ourselves? With fossil fuels we have the potential (and eventually the necessity) of transitioning to renewable sources. When it comes to elements, however, there are no easy substitutes or renewable alternatives because, well, they're elemental. Several of these will effectively run out in our lifetimes. The time to start thinking about and implementing solutions to resource depletion and exhaustion is now, not someday.
"I don't know how to tell you all just how crazy this life feels."