A point that entirely escapes the left.<quoted text>
What should we "save" it for?
Look around you, is their anything near you that isn't at least partially composed of petroleum product or that petroleum products (other than as an energy source) were used their manufacture?
In the near future when petroleum based energy has been replaced by better technology there's still gonna be a big demand for oil.
Another reason for greater use of nuclear energy, but the obvious answer has no chance in a leftist political environment.
Notice that the cleanest, best, and virtually unlimited energy source is never even mentioned.