At this point the iPad is nothing more than a toy. When it actually does become a viable laptop replacement, then maybe it will win over those of us that don't just robotically buy everything that Steve poops out.
So.. is Apple supposed to release just one product from now on? The iEverything? Every time they try to get into a new product category I hear the same thing. "It's not a laptop." "It's not a desktop." "It doesn't have a DVD drive."
It's nothing more than a toy? That's precisely what was said about the original Mac. Note that I'm not encouraging you to rush out and buy one. I certainly am not. I have enough gadgets for now, and I'm not prone to being a first adopter. I like to see a product go through a few improvements first.
That will happen with iPad, just as it does with every Apple product. But whether you buy one or not, it's certain that if iPad can catch on in the public consciousness, it will be another step in the long road that has transformed computing into something that goes on in the background, and computers into appliances with tailored systems and interfaces that more closely fit how we naturally interact with objects and ideas in the world.
Is it going to be a game changer? No, not by itself... it's part of a larger ecosystem of products and services Apple is building, very cleverly, to avoid the pitfall that befell telecom providers in the early 1990s--overbuilding capacity without simultaneously stimulating a value-added, content-driven need for it.
As long as Apple keeps working on iTunes and creating new ways for consumers to experience content, devices like iPad will see success. How much is debatable. Betting blindly on the future is a fool's game, but Apple has a pretty good set of intellectual ingredients at their disposal.
I see the iPad as another stepping stone--like iPhone, like mighty mouse, like multitouch trackpads, like AppleTV--toward easing users into a completely different user experience and user interface than we've been stuck with for 25 years.