I have also felt garter-snobbery. It is really sad that people can't appreciate these terrific little creatures. Sure, other snakes may be more glamorous but they're not as friendly, cute or curious.
I totally agree that many snake owners do it for the sake of their image rather than the actual snake.

I, actually, gave a speech on garter snakes in highschool once. I even brought my snakes in. I receive and A+ and the class loved it .
It felt great to educate people on something that matters to me and to see the class so enthusiastic about learning for once.