Two things: First, considering the touchscreen maps at my local shopping centres ae almost always down or only half work, and smeared with public finger goop, the maintenance factor would be huge in this kind of world. They'd always need constant repairs, cleaning, and upgrading. And the other thing is, though the touchscreen concept works okay at a small handheld level, if every single button you push has no tactile response, that satisfaction of a physical reaction to pressing a button, it can get quite exhausting for the fingers.
Amazing Animated Optical Illusions!
how to use Pearltrees?