I agree with every single line you have written, born in a family where it is considered a sin to kill even an ant and where plants are worshiped I must make it clear that I respect nature very much, however respecting it or not was never my point, what I wished to say was that there is no particular reason as to why we should leave the deserts in pristine natural conditions while we go on destroying the other types of ecosystems. Let's say we don't use solar energy, but we still need to produce energy from somewhere, which unfortunately as our means of energy production go is going to pollute/violate some part of nature, if the solar energy could do so with lesser pollution, It will be preferable.
Also about the anthropocentric viewpoint, I will have to say it's not all black and white, It's all very well in theory to look at animals and humans being the same, but allow me to ask a simple hypothetical question, If given an option to save either a human or an animal from sure death, which one will I or you choose?