grannyring
Another reason is a patent makes your idea and process visible to all including competitors. Competitors make a couple of changes and they can in fact "copy"your "patent" in large measure. Sometimes it is better to just keep it hidden.
eggs ackley! You beat me to it by 15 minutes. One can't help wondering if the Patent Office would have any difficulty approving my application for the Teleportation Tweak? Or would they reject it out of hand? Not that I would file an application. Loose lips sink ships.