Some 15 years ago, A friend of mine said to me "mark my words, Apple will eventually merge OSX with iOS on the iPad". And with every passing keynote since then, it seemed Apple's been inching towards that prophecy, and today, the iPad has become practically a MacBook Air with a touch screen. Unless you were a video editor, programmer who needs resources to compile or a 3D artist, I don't see how you'd need anything o…
On the other hand, I have come to love having a reading/writing/sketching device that is completely separate from my work device. I can't get roped into work and emails and notifications when I just want to read in bed. My iPad Mini is a truly distraction-free device.
I also think it would be hard to have a user experience that works great both for mobile work and sitting-at-a-desk work. I returned my Microsoft Surface because of a save dialog in a sketching app. I did not want to do file management because drawing does not feel like a computing task. On the other hand, I do want to deal with files when I'm using 3 different apps to work on a website's files.