Further, consider that, since the invention of artificial nitrogen fertilizer[1] we have been converting oil into humans[2], and population growth is the main driver of environmental impacts. Food security is an illusion: if anything ever interrupts the production of nitrogen fertilizer in a serious way billions of people will starve.
Jared Diamond called agriculture "The Worst Mistake in the History of the Human Race"[3]
We cannot judge the benefits of our civilization just yet.
[1] https://en.wikipedia.org/wiki/Haber_process circa 1910
[2] https://en.wikipedia.org/wiki/World_population Look at the graph, notice that it curves up sharply circa 1925-1950.
[3] http://www.zo.utexas.edu/courses/THOC/Readings/Diamond_Worst...