Holy crap. Why do some of you people think tablets are useless just because you don't see why someone would need one? Well, then maybe you don't; but that doesn't mean anything when it comes to how other people may use them. I'll give you a few examples.
There are very many high-quality music making/editing apps for iOS. I have two myself, and I love to use them. However, they are utilitarian apps that have a crap-ton of features, which makes them a little difficult to work with sometimes. This is a case where I'd love to have an iPad. The bigger screen comes in handy like you wouldn't believe when using UIs that are very busy. And don't say "well just use a laptop"; a laptop, regardless of its size, is still more difficult to use in moving, fluid environment. Anyway, many of the apps that are out don't have computer counterparts (to be fair, both of mine do, but since the interfaces are exactly the same as their iOS cousins, it makes using them on a computer a bit unwieldy).
Many people who buy iPads enjoy their versatility more than a laptop; a small keyboard plus and iPad actually makes a pretty great workstation.
Some people who have small children will have them play on an iPad rather than an iPhone because their motor skills aren't quite good enough for them to efficiently handle the iPhone's smaller screen.
And last but not least: it's also just a preference, people! If you're going to complain about tablets with their larger screen sizes and higher pixel densities, then why not do the same when it comes to the large monitors I'm sure many of you have for your computers. If the size of the screen truly doesn't matter, why didn't you get the smallest, cheapest monitor (or maybe TV) you can find? It's because you wanted the bigger one, that's why. So is it really that horrible if a company comes out with a product that is similar to another, just bigger? No, it isn't.
