Most people are afraid of snakes. It's a pretty commonplace fear.
Even if you have a healthy respect for them and recognize that they do a great job of keeping pests away from your house, you probably don't want a snake all up in your business. Sherry Baxter Minter was minding her own business when she entered her mother's bathroom, but when she and her cat started hearing noises, her day went from zero to 100 pretty fast.
I don't even know what I would do if I found a snake caught in my light fixture. Probably just move out, right?