I know I"m late in responding to this. I think I was waiting to see what everyone else said before I added my two cents. I agree with a lot of things, but there is one thing I didn't see anyone else address.
I volunteer at the zoo. We use live animals in public education programs, ranging from walk-n-talks on zoo grounds to community events and school programs. We do have a variety of snakes in our collection, ranging from some small constrictors to medium-size constrictors, then onto large constrictor and one large snake that isn't a constrictor at all. One of the things I was taught in my training was that when we are out on a program, most notably school programs, to always announce it before you bring out a snake so that kids have a chance to leave the room. The reason being, is that there are a lot of kids with native american heritige in my area, and some native american cultures are very superstitious about snakes. Some believe that just seeing one is a bad omen, let alone touching one. While these are the kinds of misunderstandings we are trying to correct, we also want to respect different beliefs, and the fears that sometimes result from them.
So I wanted to add cultural beliefs to the list of 'reasons why snakes are feared'.
I also knew someone growing up who had witnessed certain 'religious' rituals involving snakes and was so traumatized by the things he saw that he is afraid of snakes to this day.
We are all a product of our environment.
Also, some people are afraid of snakes for reasons that they can't explain. When I took psychology in college, it was pretty much accepted that true phobias often have no precendence. While I am not afraid of snakes, I am very afraid of spiders. Not so much the big ones, but the smaller ones. My husband, who is not afraid of snakes OR spiders, is very afraid of sharks, to the point where he can't even watch them on TV. Some people are afraid of heights. Others are afraid of the dark. Either way, I think it's very important that we, as folks in the herp community, respect other peoples' fears.
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~Alika~
1.0.0 green iguanas
0.1.0 cockatiels
1.0.0 senegal parrots
0.1.0 blue-fronted amazons
0.0.1 red belly piranha