I don't think I classify myself as entomophobic or arachnophobic, really, bugs are just kind of creepy. But even I would have started hyperventilating if I had fallen into a sink hole full of beetles.
I'm a bit of a stickler for the "Why?"s when I'm watching something, and so far Supernatural has lived up to its promise to answer that. This episode didn't though, which is a bit disappointing.