I really don't think this general theme is unique to our species, we're just better at it than the others. Beavers and their dams change entire ecosystems on a local level, a couple billion years ago plant life "polluted" the earth's atmosphere with a corrosive gas called oxygen to the point where it changed the whole composition of the sky and dictated the direction of billions of years of evolution. Any organism on the planet would kill to have our abilities of environmental mastery.
I've always found the naturalist ideals you have to be very bizarre, because it implies that under human supervision, our environment should never change. Ever. Which is contrary to earth's entire history, and contrary to a biological system that is inherently dynamic and requires change to function.
With regards to general unhappiness, don't think I really have answer to that, or the ability to explain it. But it is something I have observed.
It's really just a matter of perspective. The only compelling argument to not continuing doing it, in my opinion, is that we are shooting ourselves in the foot. Allusions to "Mother Nature" can't really be expected to be taken seriously by society as a whole.