Well, I think the reason is fairly clear. Fairies and unicorns live on a year-round diet of magical Skittles. The jury is still out on leprechauns - there have been reports of some contamination in the magical Skittles supply. These reports must be given some credence - how else to explain such behavior as appearing in movies with Jennifer Aniston?
Today my co-workers were talking about how they were looking forward to having bug guys spray insecticide outside their houses to exterminate anything that might try to wander inside. One co-worker turned to me and said, "Oh, you'd probably try to save the bugs I'm trying to kill." This caused another co-worker to admit that my influence had caused him to stop and think before he squishes bugs. He said, "I'm turning over a new leaf." Then he said, "Of course, if there's a bug under that leaf, I'll still probably end up squishing it."