I agree with the initial post.
The iPhone is NOT a revolution. It does NOT change everything. The one advantage that it has (for now) over it's competitors is that screen. But it won't take long for the rest to catch up.
However, part of the reason why it is SOOOO popular is because of the percentage of owners who are out-and-out fanboys (I'm not saying that applies to everyone before you all start having a pop). These fanboys hang off every word that comes out of the Keynotes and would not be able to find the will to live, should they not be able to get their hands on Apple's latest and greatest.
The iPhone is a great all-round device, don't get me wrong. I WILL be getting one, because I want to use one for a few months, to see what they're like first hand. If I don't like it, I'll sell it. One good thing with iPhones is they always manage to hold their value pretty well. There are plenty of other options out there (HTC Desire, HTC EVO if it gets released in UK) that are equally capable.
This was posted on these forums earlier today - I think it sums up the whole fanboy culture pretty well (made in the US which is why it refers to the HTC EVO):
http://www.youtube.com/watch?v=FL7yD-0pqZg