It is incredibly frustrating. I brought a rescued ball python to the vet two weeks ago and I was told by another visitor who saw me with her that she was going to eat my (non-existent) children and I was crazy for having one.
Education is key when it comes down to it. All we can do is try and maybe people will start listening. I have made progress with people I know at the college I go to and the people I work with... it just takes time and gentle persistence. It is really hard for people to let go of fears and preconceived notions.