To me it doesn't really make sense to have the computer spend all those CPU cycles on pixels I don't even see (because of the size of a 13-14" laptop screen).
The CPU isn't the component spending the cycles. Also not seeing pixels is a feature. I am reading text roughly 99% of the time I'm on my computer. Shitty low DPI screens make my eyes ache and my head hurt. My Air's screen I can turn the overall brightness down yet still have great dynamic range. I can also see it from just about any angle unlike the typical shitty 1080p panel on the average PC laptop.
