Touchscreens are great! You can put intuitive UIs on them, so if you need to reset the TPMS setting, change the backlight color, set "coming home" light duration, cabin illumination delay, etc., it's much easier to do so on a touchscreen than to fiddle with a menu in a single line, or even worse, hold some weird key combination when powering on the car.

But for basic radio controls, AC control, windows, etc., physical buttons are the way to go!