While I fully understand the vision of Jobs and Co when they opted to not include native support for a Stylus, this is one instance where I think the App community has really blown their vision sideways to include some very useful features.
Stylus input, by itself, isn't that big of a deal for me on the iPad. I'll agree with the OP that I find it easier to type one handed when using a stylus. And given my specific use cases (I'm on construction sites and board rooms all day...literally back and forth between the two), I use a stylus for all my screen input to try and keep my screen as clean as possible. But that alone isn't 'superior' to me to simple finger input. Its just more conducive to keeping the screen clean.
What really amazes me is how far apps like Noteability and several of the drawing/stenciling apps have gone to make stylus input more usable. For example, trying to keep your hand off the screen is difficult when using a stlyus, and holding it above the screen feels awkward to me. So apps invented "dead zones" and "zoom" functions with auto-advance of the input window to allow you to input via stylus while resting your hand on a zone of the screen that doesn't accept any input. Marvelous, highly innovative (not sure which app developer invented this first) and turns a bolt-on experience via stylus into a MADE FOR STYLUS user experience.
I'm hoping Apple see's fit at some point in the future to allow for stylus input as an integrated option via Bluetooth. They allow for printing from the iPad and that feature is totally unobtrusive unless you are looking for it. No reason they can't allow for native stylus input as well, just for those that want it.
However after buying many over the last year,there is a huge diff in stylii, many with the sponge ball are clumsy and drag....the best are the ones from ifarady.com - really work well - esp the "artist" model..
After the lengthy threads on "Which Stylus?" in the Accessories section, I finally ordered an iFaraday after seeing so many positive comments on them. Personally....I hate the thing. Not enough surface grip for me so my handwriting looks terrible. Maybe that's the selling feature of the tip but mine is going back. To each their own and thank goodness we have such a large selection to choose from eh?