I was thinking more about resources like clean air and water. Humans used to pollute rivers and air because they treated it as a free resource. However, the cost of air pollution are health problems.<p>There is no such thing as free lunch:<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;There_ain&#x27;t_no_such_thing_as_a_free_lunch#Meanings" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;There_ain&#x27;t_no_such_thing_as_a...</a>