My iPad is mounted next to my Macs. I use it as a media player, checking deliveries, personal messages when I'm on my work laptop, and such. All of that is done via touch. When I need to flip over to my Mac to do the same thing, I have to use a 40 year old interface (a mouse).

It's not hard. I don't think we need to make everything touch-size on Mac. Small icons & buttons are perfectly fine in a production environment, and they're considered to be accessible. Just let us touch the screen.