The natural occurrence of beauty is the strongest argument for God, so it is not surprising that materialist culture is adamant in its suppression.
There is simply no reason why humanity ought to consider some aspects of nature "beautiful" or "worth preserving". Human beauty can be understood: if you want to be Freudian, perhaps you could say music or art gives one a sexual advantage. But what is the source of our disposition towards particular plants, animals, rocks, stars? It's irrational and not useful for our survival, yet our very perception aims to propel us beyond mere consumption of Nature and towards reverence for it. In short, to use the language you are familiar with, we recognize the blessings that God has given us.