Plants are amazing and to me the two most amazing plants are kudzu and Tree of Heaven.
Tree of heaven in particular is an amazing plant. It's also called "ghetto palm" and is taking over the northeastern US. It's an amazing plant because it will grow literally anywhere. It is known as the only tree that will grow out of concrete, which is why it's known as "ghetto palm". Where native plants will not grow, tree of heaven will grow in any soil known to man, just about, and in just about any conditions. It's particularly prone to urban areas. You see it grown all over abandoned properties all over. No matter how polluted the soil it will grow there.
Nature will do just fine IMO. We need to worry about our own survival.