Is it wrong to be disdainful of deeply religious, gun-toting people?

I see everyone is talking about Obama possibly being disdainful of these types. I personally don't care if you live in a small town or a big city, but if you're deeply religious, especially Evangelical, and extra especially if you think God actually talks to you, I personally think it's a sign of weakness and gullibility. If you think the 2nd Amendment is one of the most important amendments and you are rabid about the 2nd Amendment, I think you're probably bit of an extremist, somewhat crazy, and definitely preoccupied with something that does not matter. Is there anything wrong with having judgement calls like this about people? I'm sure they don't like me because I'm a "heathen" a "sinner" and that I'm "not worried about the government being oppressive or I'd be buying more AK-47's."