I seriously can't fathom why anyone would want them. You need an index point when using your fingers, a button is made of index points. The plastic around it, bezels, the tactical nature of it.

With a touch screen, your arm is just floating, your point of contact is your fingertip. It's impossible to learn the muscle memory to repeat those actions. But even if you had some crazy nerve-muscle control when you could pick out a point at arms length on a featureless plastic square, your muscle memory would be fucking pointless, because the animations always lag a little so you are required to look anyway.

It reminds me of "Norman doors". Those are the doors with an element like a vertical rail on either side. One side you have to push, on the other you pull, but either side is identical. Meaning that you always end up pushing when you have to pull and vice versa. Most doors you already know to use just by looking at them, because you've used a similar door before. But no matter how many times you've seen a Norman door, you have to learn how that individual door works. With touch screens its similar, even if you've had your car for a long time, you need to learn it each time you use it. It's not just that you take your eyes off the road, you take your brain off the road.

Your body is so cool, it learns things and does them without you having to think about it. I don't have to think about my fingers when I type. I always have to think about what happens when I'm using a touch screen, even as a passenger. Glad I don't have one in my car.