No, you don't get it
Its a computer for non-technical people.
A computer that doesn't require its users to spend an age learning about how to make it work.
A computer that doesn't require its users to have to manage virus checkers and where they need to go to patch all of the bits of software they have installed.
A computer that isn't as flexible as the Unix system that I'm using now, or any general purpose laptop or desktop, but a computer nonetheless.
If you don't understand why this will be attractive to people and work in IT please either:
a) find a clue stick and repeatedly apply it to your head until you do
b) find a different industry to work in.
I have had to help relatives with their PCs. Starting them up and launching a browser to download patches more often than not I'm greeted with a browser with toolbars from MS Live, Google, Yahoo, AOL, etc. Often all installed at once. They don't know how they got there, they don't know if they are important, and wouldn't know how to get rid of them anyway. That is the sorry state of general purpose computing today.
There are many people that just want to access the web, manage their email, and maybe do something with the photos they took at Christmas. To these people a simplified computer interface with centralised patching and updates isn't something to be pooh poohed, its what they are looking for. The massive lack of realization of this around the IT industry is the most worrying thing about the reaction to the iPad.