Octupuses also have a very short lifespan which seems apt: you don't need societies, buildings, relationships etc if you have truly mastered the sole purpose of your existence really well - the nature of procreation and empowering the next generation to survive.
Human beings are actually awful at this it: makes me wonder if all social, cultural aspects are truly "too complicated" ways to achieve what octupuses have mastered through a much simpler process and potentially without needing arbitrary things like consciousness.