It strikes me that this is the kind of feature that you can safely ignore if you don't want to use it. I suspect that touch surfaces will increase in popularity

It strikes me that this is the kind of feature that you can safely ignore if you don't want to use it. I suspect that touch surfaces will increase in popularity over the next few years, at least amongst certain user groups and having the OS accommodate these devices can only be a good thing. It's not as if you will be required to use it.