So, I buy the standard responses, but try this on for size:
Apple's big win was converging a lot of shit and making it simple to do everything from one (or a couple) of devices. Convergence is bitchen on Apples.
But, with Google as a backdrop, and various folks streaming various shit, and everyone playing catch-up with the Apple media experience, I think we might find better, deeper, more varietous, open, and controllable brands of convergence. In essence, the Apple "lock down" on 3rd party stuff will end up limiting them when convergence is better broadly.
In future, it may feel like you've sold out into the Apple world and hobbled by it. iTunes relentless desire to control my music pisses me off; I don't want a bigger version of that. It's not so much the hardware or OS, but the convergence upstream of your device that will count. The smarter the web gets, the more you'll only need a browser in your pocket --- and that's not very tough.
A open market of converged technologies may be better than the converged but closed world of Apple.