incorrect. repeat after me: "not everybody does what i do. not everybody feels as i do." see millions of ipad users.
as a professional .NET developer, let me say what a tablet does for me:
1) best battery life
2) best form factor for couch/toilet
3) best form factor for passing around
4) no airport security
5) no flimsy construction
...so far, ipad is the only product that does this. what is your 10-hour batter alternative that is suited to using while laying sideways and not having to remove from my bag at the airport?
You do realize that I am not trying to dictate how other people should run their lives, right? Just giving my opinion.
1) best battery life. Actually, the iPhone 4 has a significantly better battery.
2) Best form factor for couch/toilet. I don't see that at all. It is hard to hold for long periods of time, the screen is too big to easily manipulate with one hand, and the keyboard is an awkward size in both landscape and portrait mode. The iPhone, however, fits a hand like a glove, is easy to type with in both layouts, and the screen is small enough to always be able to touch all of it without making awkward hand positions.
3) Best form factor for passing around. Once again, when compared to the iphone the ipad's size and weight is unwieldy.
4) no airport security. It's only a matter of time until they are treated just like computers, but iphone's aren't and will not be subject to that.
5) No flimsy construction. Because of its dimensions, materials, and weight, the iphone 4 will always be more sturdy than the ipad.
What I am trying to say is that the iphone is better suited for light/mobile computer than the ipad, and it is because of the inherent design of each. Oh, and with an ipad you have to carry another device to act as a phone. And the retina display makes the ipad display look blurry.