Well we don't know if the universe is expanding, infinite, closing, or unmoving. I don't think we ever will, unless we survive billions of years. Even nebulas we can see through Hubble telescopes are thousands of light years away. The Orion Nebula, 1,344 light years away is the closest nebula discovered. And there are hundreds discovered. I'm talking 7,900,872,501,558,770 miles. Thats the closest nebula. Anyway yeah we can't and never will be able to find the edge of the universe. There are lots of mysteries out there.
But still when I said likely they exist, I was wrong.
You are right, they probably don't exist. Especially considering their anatomy would be composed of wheat, and cinnamon, which would be incredibly hard for a life form to exist in, much less move around like they do.
If the parallel universe theory is correct, then I can't argue with that. In some reality there actually is cinnamon and Gilbert.