That's all fine and dandy, except for the collective strain all of these fruitful families put on the environment. That's where humanity stops being glorious and just becomes cancer.
And if you truly didn't see human beings as cancerous, on some sort of level, you wouldn't feel the need to enslave them under theocracy.
The beauty of nature is meaningless in and of itself. It only has value because sentient beings such as ourselves exist to recognize and admire it...and since we are at the moment the only species we know of that is sentient enough to really appreciate it (capable of art, music, etc.), we are anything but a cancer. On the contrary, until we find evidence of other intelligent life (which I'm sure has to be out there
somewhere), it seems that our existence is the single greatest thing that has ever happened. Looking out at the apparently desolate and barren universe, the gift of life and intelligence seems rare enough to consider pretty profound and special. I think anyone who considers us a cancer, a virus, a disease, or anything of the sort is undervaluing our own significance and beauty and missing the whole point that Earth is only special
because of the life and intelligence it harbors, which we are currently the greatest known expression of. In any case, no matter what we do, the Earth will survive. We are no threat to this planet, and we are not even a threat to continued life on it. Even if we were to blow ourselves all up in a nuclear war and go extinct, the planet itself would go on oblivious to our disappearance, since the planet itself is not sentient. Furthermore, life on this planet in general has survived far worse catastrophes, such as a gigantic asteroid hitting us millions of years ago. We may threaten other particular species, but we do not threaten the planet or life on it in general.
Ironically, the single most important thing that humanity threatens is itself. We're a threat to ourselves for several reasons, the biggest being the existence of weapons of mass destruction...and a very remote threat being "overpopulation," which I must reiterate for the third time is an economic problem that is pretty much confined to the third world. In America, we reproduce at approximately replacement rate (immigration aside)...and because of that, our population growth in America is not cancerous, it's not rampant, and it's not even troubling: It's almost nonexistent.
Obviously, NOT one of my favorite guys. 
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