“Some of it is essential for life, some seems useless, and some has its own agenda.” It’s like you have a bookshelf filled with books. Some books you haven’t r

“Some of it is essential for life, some seems useless, and some has its own agenda.” It’s like you have a bookshelf filled with books. Some books you haven’t read, some were gifts, some were acquired, some you didn’t finish and some book you will read over and over again. All of them were kept for some reason. I don’t believe nature would create something that’s completely useless. I just know that often I fail to see what the use might be.