No, I'm not buying an iPhone. Apple won't let any third-party applications onto the device. In other words, it's not hackable, and I'm not gonna drop $600 on a computer I can't mess around with. Apple's current line on third-party applications is, "if you want the iPhone to do something that it doesn't do, build a website that does it." I want to play Ogg Vorbis files, run an NES emulator, SSH into my web server, record lectures, act as a remote control for my PowerBook via bluetooth, and make VoIP calls. None of that can be implemented as a website (at least, not without flash).
I don't care if the applications that do those things aren't as shiny as native iPhone apps -- I need to be able to decide for myself whether installing a program is worth it or not. Apple didn't design the thing for people with my priorities, and that's fine, because that's what Nokia is for. I got a Nokia E70 a few days ago (the iPhone is driving down prices of other smartphones on the secondhand market), and since then I've been a gleeful little nerd.