Alternative parables - the Wheat and the Weeds

So there was a farmer who planted a field of wheat.  But in the night, his enemy came and scattered weed seeds through his field.  Odd behaviour, I'll grant you.  But you know what enemies are like.  They do odd stuff when you're not looking.
So when the farmer went to his field to see the wheat growing, he found that there were weeds growing in the wheat field.  And his workers said, "shall we pull out the weeds?"
And the farmer said, "No.  For lo, the wheat is genetically modified."  And he went out with his tractor and sprayed the field with glyphosate.  And the weeds withered even like unto a genuine human emotion in the Big Brother house dying in the night.  But the wheat stood untouched.  And the farmer was pleased, for he had his pristine field full of perfect, flawless wheat again.  But all the bees perished.  And the wheat stood alone in the land and was gathered into its barn in due course.

Moral: Some weeds are pretty.  And fields that only have wheat in them are really boring, aren't they?