Re: It's inevitable...
Guess what they use at the research zoos to interact with the apes? A touch interface. Do you know why? It's the simplest interface.
Can you click and drag pretty pictures with your built-in meat stylus? Yes.
Is it good for anything else? NO.
Typing on a touch screen sucks. Fingers are often wet, oily, gloved, and are often just too damn big, and depending on the task, there is a more efficient interface.
Do you use a touch interface to play Halo? No, it would suck and slow you down.
Do you use a touch interface to write a thesis paper? No. It would suck and slow you down.
Can you surf around the web reading blogs with a touch interface? Yes, sort of, but it only really works on the most dumbed-down of interfaces.
Can you play a simple game made to work with simple tapping and dragging? Yes. But so can a monkey, or a cat. http://www.youtube.com/watch?v=CdEBgZ5Y46U
Can you write a simple game that uses a touch screen with only a touch screen? No. You'd use a REAL interface, unless you were a sadist.
Touch screens are not "the wave of the future", they are what the manufactures can easily put on small devices with minimal parts, assembly and cost. Period. Most people just suffer trying to use them for real work.