Laziness and planned obsolescence on Apple's part. It's going to piss a lot of people off.
No. It's not.
More than an even chance that Apple will continue to break records in iPhone sales.
It might piss some people off. But who cares. It's a numbers game. Apple has decided that it is advantageous as part of their strategy, and they're likely right.
We heard the same bellyaching when Apple made a similar announcement about iPhone 3G support.