Is that it's not an open platform.
That's an important point to many of us here.
That's true for a computer, not for a consumer device. How many people on Slashdot really care if their home theater systems is open? The same with an iPad/iPod Touch. It's a consumer device for consuming media of all types.
Maybe there's something wrong with me, but I hate having a clunky phone in my pocket. At work, the phone stays in my computer bag or gets put on the desk. At home it stays in the computer bag or gets put in place where the kids can't get it. But I'm strange, I hate cell phones.