Because the most recent update for the iPhone rendered it slow and crashy, apple banned cross compilation from flash to objective C for iOS apps (for no identifiable reason), apple bans anything from their app store that competes with their business model (like grooveshark), and now their flagship product has a major engineering flaw and they don't seem to care.
Maybe you're still happy after the company has treated you like crap, but a lot of other people aren't.
I swear to god I'm not saying this to pick a fight with you or take a side in some Internet sharks/jets thing: I couldn't be happier with how Apple is handling me.
I'm not an iOS dev though. Are you? It may be a different story if you want to get in bed with them. I don't.
I bought an iPhone 4. It hasn't shipped yet (I'm not crazy enough to sit in line for a phone). But if I had just found out about the yellowy thing and the antenna thing? I would STILL be tempted to wait in line for one, and I would certainly still be shelling out for it.
I think I speak for the vast silent majority of technology customers here.