Touch screens are part of the future. Yet they won't be used much outside of tablets, phones, and kiosks.

Think of it this way: we've had touch based input for about 30 years, and similar input devices for about 60 years (e.g. light pens). Yet it didn't catch on outside of a limited range of devices. A big part of the reason is posture. It is difficult to hold your hand up to the screen for extended periods of time. Of course that doesn't matter for a lot of mobile devices, which is why touch is catching on now (we can finally build light weight devices with reasonable screen sizes). But office computers will be stuck with keyboards and rodents for a fairly long time to come.