I personally find disturbing how people wants to do _everything_ with web technologies. Can't they just learn how to write native apps? I wouldn't like to see my desktop full of slow and bloated web apps.
They can, but then they need to either write multiple ports of the app or target only a small subset of the market.
The first sucks (speaking as someone who in fact works on a project that ships a nontrivial native app on several different platforms), and the second loses you customers _and_ creates people who give you bad press because you're "locking them out" by not providing an app on their platform.
Of course web technologies are not the only way to write cross-platform apps, but the other options I know produce results that are even less appealing to users.
