Two Views:
Was having lunch a little while ago, with a retail store manager buddy.
He's got a big Android phone, Galaxy S, I think.
I'm getting a broken iPhone to fix 'n play with, and we talked about what they both can do.
He said he only fires up his home computer once or twice a month, these days.
The phone does his email, texting, browsing, shopping, and even has an app to edit Photoshop pictures!
His two little girls are 3 and 5, and each has her own dedicated computer.
They're old PCs, and with modest horsepower, but they're fine for the kids to play on.
Pretty much bullet-proof, too.
Of course, iPads or other Tablets would probably equally attractive to the kids, but they're expensive and more delicate.
On the other hand, my lawyer got an iPhone a few years ago, and has eventually moved his PC-based office to mixed Mac & PC.
He got an iPad, and started doing his own documents on it.
Maybe it was the wow-factor?
Anyway, he soon realized a bluetooth keyboard would make the pad into a real computing device.
Now, he'll often prep a document himself, instead of letting his secretary type it for him.
In conclusion, it seems that some people are already migrating to the smaller and less-powerful appliances for many of their day-to-day uses.