Let us first assume that everything in the photos above, including the pictures themselves and this writing here, is part of nature. What, then, is nature for? It both encompasses and transcends the question "what is the purpose of life?" because it goes beyond life - to the "inanimate objects" that exist in the universe.
To inquire about purpose or meaning is a very human thing to do - the inquiry itself a part of nature. One purpose could be inquiry, one purpose existence, one purpose admiration, love and/or appreciation. But what is the universe for? A silly question, I might add. Silly because the question's inherent complexity is enough to befuddle any genius. Many geniuses have tried, and all have practically failed, to explain or answer such a question. But perhaps the meaning is simply in asking the question? The answer, always beyond reach, rendered insignificant.
In questioning one can experience the befuddlement, the mystery that entangles both the inanimate and the animate parts of nature/the universe. The artificial, human creations themselves full of insidious mysteriousness.
Another day, another day.