To answer your question from my perspective:
The iPad isn't a computer per se. You can pretty much do whatever you like on the computer without having your hand held. If you stop there, it kind of carries a nihilistic view towards the iPad.
If you look past that, however, you might notice that the iPad can supplement your tech life. Sure, it's portable; and the battery life makes it worth carrying around with you as an information device or in lieu of a gameboy/PSP. I think it has added value for those that don't already have an iPod or iPhone.
Also, there are apps already available that take tasks done on the computer and streamline them. That's where it glows, I think. Take iWork for example. With keynote you can pull out the iPad and do a business presentation on the quick, update mission-critical documents, or pull grades for a student instantly from numbers. The many PDF readers allow you to share documents with other people in a more human fashion, no passting around the clumsy L-bracket that is a laptop. And, my personal favorite, you can carry and show your art portfolio at any moment, with music to match.
The short of my point, though, is that it's an enabling device. It's not about tinkering -- which turns a lot of people off I know -- it's about making life easier.
Sorry for the long winded response, but I figured you might want an honest answer.