Now that I have a mac on the way, I'm inclined to start behaving appropriately so that I can fit in once I get my system. I'm going to have to grow my hair longer, slouch more and start acting superior (the latter won't be such a transition). :) Don't sniff, you've seen the commercials as well unless you've lived in a cave for the last few years. I find the idea of a mac community somewhat laughable as it is just a computer, but considering the overwhelming popularity of even more trivial activities like some of the social networking sites, I guess it's not as irrelevant as it seems.
I see the value in most web based activities, but I don't understand the relative importance anything like this plays in someone's life. If you use a certain piece of equipment or have a hobby you want to share with others the web is really the best place to network with others. But, too often people need to separate themselves from others as a means to establish their individuality and a common result is a mac user flaming a pc user or vice versa. I think both sides can argue for their advantages, but it's really irrelevant in the grand scheme.
I think demographically the Mac community is usually a little more wealthy, educated and artistic. I'm not making that up, I've read it in several places and here is an example of one study. That sounds like I just called the pc users poor, ignorant, and boring to boot. I don't relate education directly to mac use, but I think it's established that with wealth goes education and the likelihood of artistic pursuits (not counting the starving artists out there, I think those with more money usually have more opportunities). So, because Macs cost more on average, I think the other statistics follow, and that's making no value judgment on the mac vrs a winpc.
If pc users are less educated, etc., then so am I because I have been a winpc user for the last 15 years with an Amiga 500 as my last non-mainstream computer system. It's difficult to say if a large portion of the loyal mac users are just sticking with what they know as opposed to actually analyzing the pros and cons of a mac vrs pc. I think that most mac users are more familiar with pcs vrs the other way around. In the case of musicians, it's very true that they are usually less willing to change once they have a working system hence the overwhelming predominance of macs and the related hardware/software within the professional recording world. It's probably the same reason that Fender and Gibson guitars still have such large market shares, when there are dozens if not hundreds of great guitar companies.