[dsr_]

Blind people can gently touch the wall, find the buttons, and figure out which one is up, because it's over the down button.

Try that with a touch screen.

[fnord123]

Right, but if they add or remove floors, they don't need to change the touch screen. Eat that, normal buttons! /s

[scaryclam]

Heck, a lot of physical buttons also have braille on them