8 legs are also well representated and going strong for millions of years, not to mention carcinisation being a meme at this point. When it comes to robotics,

8 legs are also well representated and going strong for millions of years, not to mention carcinisation being a meme at this point. When it comes to robotics, my best guess would be cost and complexity. We also either need a better control interface or better self driving software to take advantage of the legs moving independently (I assume optimizing how the 8 legs should move to climb a rocky path for instance is just a computational nightmare to do realtime)