I read many posts about the iPad being a replacement for desktop computers, the device that’s aimed at changing your computing life. This is partially untrue.
There’s a big difference between replacing desktop computers and changing the computing scene forever. The iPad won’t replace desktop computers as it is now, and you know why? Because it just can’t. The iPad isn’t a self-sufficient device, it’s not independent of iTunes, it can’t manage itself on its own. As long as you can install every application and purchase every song from iTunes on your iPad (like you’d like to do so), you can’t - say - install software updates using just the device. And even in the best situation where you actually buy every single song to build your music library, I don’t think that situation is statistically accepted as “common”. Same applies for contacts, photos and, especially, movies. You need a computer to move that stuff into the iPad, period.
Now the question is, if the iPad can’t replace a desktop computer just because it needs one to fully work, how can Apple even think to revolutionize the computing world? Because it’s a start. I personally don’t think I’ll ever ditch my MacBook and replace it with an iPad, but I’m sure a lot of people will - and today is the start of this process. The iPad we currently know is the first iteration of a (hopefully) series of products that will slowly evolve over time, just as internet connections will grow in speed and reliability. The day you’ll be able to a) download an entire movie or software update from iTunes and b) have that download finished in an acceptable time, that’s when things will change. It’s not now, it won’t happen next year - nobody knows when that’s gonna happen.
You can’t think of the iPad as a full desktop replacement now, even for the less skilled user who just needs Safari and Mail to work, because that user needs the cable to make his device work.
The iPad is not a replacement for desktop computers, but it will be someday. And until that day, keep syncing.