Who said they could afford it?
I said "when they can" which means they get their hands on mommy or daddy's iPhone or iPad and can use it at that age, then it is quite intuitive. Maybe your habits have overrun your intuition. Just because something is done a certain way doesn't mean that's necessarily the only way or even the best way.
What does Carpal Tunnel syndrome say about our keyboards and mice, for instance? Yes, they do feel natural to us because we've used them for 30 years (mice) or 130 years (keyboards/typewriters--or even longer). The fact that people are having hand and arm problems means that those keyboards and mice are not the best way; they were, however, the only form of reliable textual and pointing I/O available for a long time. Speech and pointing are far more natural and eventually even the keyboard will be completely obsolete as voice recognition and touch get faster and more accurate.
