Brandi, it more likely just due to the other people being in their own thought world, rather than them snubbing you because of what kind of bike you have.
Sometimes firends tell me they passed me in their cars and waved to me while I was on my bike, but that I ignored them. Never saw them or noticed them, that's all!
Today I was stopped at an intersection and a group of about 6 motercyclists passed in front of me. I looked at each one with a plain open friendly face. 4 did not acknowledge me- I think they did not notice me. The other two caught my eye and gave me the little nod of respect. Cool.