[gasbag]

Less useful to most people, sure, but most people also use their desktop computers for only those same things.

I make music, and for the past several years, I've been pretty much exclusively using my phone and iPad to do it. The touchscreen works very well for my use case, and the audio pipeline is quite flexible with the right apps--in many cases outshining the workflow available on a full PC. I'm working exclusively on the device and using no external services after downloading the apps themselves. That takes far more computing power than a dumb terminal.