At this point the only thing I strongly prefer to do on the iPad is read ebooks. I wonder how many people there are like me that love the portability and convenience of a tablet but would be happy to put up with a slightly larger device if it meant they could do real work with it as well.
http://www.geek.com/articles/apple/apples-ios-5-finally-brin...
To wit: there's probably at least one big segment of the population that just doesn't seem to need laptops all that often, if at all. Even ultralight ones. Give them an iPad, and they can do their web surfing, media consuming, emailing, Facebooking, and fowl-slinging all day long. My girlfriend and my parents fall into this category, for instance; they own MBAs and iPads, and the former are usually collecting dust -- perhaps occasionally used for word processing only.