It seems all things which have energy always move or spin around (and this can be said about hyper-children, small terrier dog too, in real life).
My guess is in nature, if a particle has energy it will move and spin, consider it`s neighbor are the same, when your neighbor and you are loaded with energy and bumping into each others or repelling each others, chance is you will spin too. In space things spin, it takes many gyroscopes to keep a satelite from spinning by itself as it travel in the orbit. So I can guess: spinning is the force on nature apply to all things moving, unless restrained somehow.