Isn't the real question, what are you using your Mac for?Yes, apps can be an entirely different experience on the iPad but with the iPhone 6 Plus that gap is closing and frankly even with my iPhone 5 the times I'd want to reach for my iPad I find it better to reach for my Mac. My main use of the iPad now is the Logic X remote but I just got a MIDI controller that can do most of what the app can anyway so I'm stuck figuring out my use for it. I just don't mind using my iPhone for magazines or web browsing. As appealing as the technology is (the quality for the price may be enough alone to justify owning it), I can't think of much that can be done on an iPad or at least done significantly better than an iPhone 6 Plus or a MacBook Pro; frankly, what can be done better is dependent on the form factor and display size.
So, what are you using the iPad for nowadays? I'd honestly like to know how MacRumors users fit the device into their workflow and ecosystem.
With the Air's lack of use by me, I wasn't planning to buy an iPad Air 2 but after cashback I paid about 30% off the retail price so it was an impulse Black Friday buy. I might end up selling it frankly if I can't justify owning it anymore but at least upgrading cost very little.
With the exception of Adobe Illustrator, and good photoshop apps, I use my iPad for everything, that I would use my mac book for normally.
The only thing I really need the macbook for other than Adobe, is as a library for my iTunes. If they didn't need to have a computer with iTunes on the hard drive