Personally, I love snakes. Symbolically they - along with the wolf and a few other creatures - have gotten a bad rap. The “serpent” of the Old Testament was actually not a snake, but artistic depictions that went off the text understandably turned that cuddly creature into one (on your belly shall you crawl, etc. etc). Nor did Adam and Eve eat an “apple.”
There is data to back up the idea of “beauty and symmetry” when it comes to human faces. Is that because humans are conditioned to be attracted to symmetry, or is it because there is something inherently “attractive” in symmetry itself? This seems to be a sociobiological question. Most people don’t seem to care for asymetrically-designed stuff - maybe a fashionable outfit, sure. But what about their homes, cars, laptops? There seem aesthetic as well as practical reasons to pursue a symmetric look. People don’t seem to care for the alternative - perhaps it appears sloppy, crooked, or unnerving.