If you blow a bunch of bubbles, those in the middle of the bubble pile will naturally tend to form into hexagonal shapes. Nature is full of them.
Nature is also full of things like the Fibonacci sequence. It's really quite fascinating.
But, yes, we still have a lot to learn about the universe. If the science were complete, we'd no longer need scientists. I think that assuming we know it all, or even that our understanding is correct, is hubris and vanity.