I agree with you 100%. I've been a mountain biker for 10 years, and a roadie for 2, and I find the general level of snobbishness WAY higher among roadies than mountain bikers. I feel the first encounter with many roadies (not all, of course) begins with a stare down of frame and components, a quick judgement of whether this person/bike is worthy of respect, and then an exchange of pleseantries IF that person/bike is deemed worthy. On the trails, however, there is a general vibe of brotherly love, where riders seem genuinely psyched to see other people out riding. It seems that whether you're riding a Blur or a Huffy, the vibe is less about what you are riding (and what you are wearing!) and more about the fact that you're out there on beautiful singletrack having a good time. Of course there are always exceptions, but this is what I've seen to date.