Irreplaceable

Nature. So irreplaceable
yet, ruined by those who think it is erasable
they don’t understand that we need need to make it sustainable 
because if we don’t, in the future, it will become unavailable, left untraceable.

These people believe that everything in nature is available.
but they don’t seem to understand that not everything is tradeable
and that some things just need to be left unobtainable.