I don't know why you'd think that?

I don't want to have to pull out my laptop (or even iPad) for phone calls or to check a quick e-mail.

Obviously there are types of real serious work that can only be done on a laptop.

And then I'm bringing the iPad to read books on, which takes up a lot less space than if the books were physical. It's far nicer reading on the iPad than the other devices.

I have zero complaints. My phone doesn't take space away from anything else, and my laptop+iPad together are slimmer and weigh less than a single laptop did in the pre-Air days. And much less when you consider I no longer bring physical books/magazines.