The lack of touchscreen tech (and slightly less ridiculous screen resolution) is (I suspect) the reason Apple's been able to put out the latest Air with twice the battery and twice the SSD drive space of any other Ultrabooks on the market, for the same price (or less): an unprecedented event in my experience with the Mac eco system.
When I bought my most recent laptop and desktop, I went ahead and got a versions with touchscreens built in, because, hey, why not, it’s the wave of the future and in any event within a year it would be standard issue tech, etc. I wasn’t entirely sure if I would use them, but I thought there …
A nice collection of reasoning (and delivered in a non-absolutist fashion, which is an other plus).