If you somehow believe in a CREATOR, then what you think your ENORMOUS BRAIN is created for?

Now, if we decide to put a “TAIL” to robots unlike human structure, what you think we would do it for? (some people I heard really have fun thinking this that what if we human had a tail like animals do) So that it can use it’s tail, right? So, if we set a “tail” in a robot, we will also program it for it’s purpose and for it’s functions as to how and when and why it will use it’s tail, right?