And I think most users would prefer software that does stuff instantly Hmm, users certainly prefer software that's fast, but I don't know about "instantly". F

And I think most users would prefer software that does stuff instantly Hmm, users certainly prefer software that's fast, but I don't know about "instantly". Feedback is important. A button that gently clicks so you know it took effect is better than a touch sensor with no feedback. Animations can serve the same purpose as that click. (And of course they can be overdone, just like a button can be overly stiff or loud.)