I can say the same thing about texting with a number pad. The iPhone core market do not have qwerty keyboards on their phones, so the iPhone will be a large step up. The only ones complainig are the power users that erroneously think the iPhone is made for them; it is NOT.
So who is it made for then?
The large majority of people posting here saying they want an iPhone are either:
Business users who want to claim they need the new "High Technology" from their companies to increase their 'productivity' or some crap. In this case, you are right, because I don't see how having an iPod, a picture viewer and some maps will make you so much more productive. I'm pretty sure many of the crackberry users who make the switch will be fairly-to-very disappointed with the iPhone.
The only other people who are willing to shell out $500 and $600 (waaay too much) for a phone are fanboys that will buy them whether or not they need any of the features at all. I personally have no use for such a converged device (which will probably be a big battery-drainer), and certainly not worth the expensive initial cost as well as the monthly contract payments.
Business users will find it not useful and productive enough: Has Apple mentioned some kind of text editor on the iPhone? Didn't think so. What good is a bloody iPod when you need other features.
For your supposed "iPhone core market", it'll most likely be too expensive, have too little battery life, and not have some features that consumers are beginning to be offered from other phone manufacturers, such as a better camera and a removable battery.
Also, I'm promising you that it won't appeal to a large majority of the teenage market (10-19 year olds), because their parents won't have the cash to splash on this, so it looks as if the core market is shrinking by the minute.
I think Apple are very brave to enter into the phone market, and while I think they've created a very innovative device that does things, the 'Apple way', their price justification doesn't quite hold up, and this first version is certainly lacking. I just hope they stick at it for a version 2, because they are certainly onto something, but they've marketed it slightly wrong in my opinion.