I think the concept of tablets is pretty simple. Not everyone needs the power and size of laptops/desktops. I think it's fair to say the average consumer uses their computers mostly for simple tasks such as web browsing, music, email, etc. Tablets have made devices that focus on those sorts of tasks. I'd rather be sitting here in front of my TV right now watching the basketball game with a smaller device such as iPad then with my 15in MacBook Pro because all I'm doing is browsing random sites and messing around on Facebook and twitter. In no way am I even coming close to utilizing all the power of my laptop right now.
But why not get a small laptop for fewer money then? Instead of a tablet...I just don't really see the big advantage of a Touchscreen over the versatility that a laptop offers with a real keyboard so you can use it both for simple tasks and normal work.
This is what mostly irks me about the iPad, more so than other apple products. Regardless if the iPad is better than other tablets or not...next to no one bought tablets before the iPad. Once apple comes out with it, it's the next big thing for some reason.
Yeah, there always netbooks but for the most part tablets are slowly taking over that market since they basically serve the same function but offer a better user experience by simplify everything. You want to log on? slide your finger, you want to check you email? touch here, use the internet? touch here. I don't think you can argue against how easy they've made everything.
Also I travel. When I'm traveling I'm most interested in checking emails, web browsing like checking my daily sites, maybe play a quick game or something to pass the time. Yeah I could do that with a full laptop but It's size is also an advantage because it's easy to toss it into my bag and now really have to worry about it being bulky, weight, massive power cords.
If it wasn't an Apple product I don't think so many people would have such an issue with it to be honest. There is just a stigma that some people have built around it that it's hard for some to see past it.