Indeed. I had an original iPad, and in Oct '13, went for an iPad Air. By that point, the improvements were great enough to make an argument, to me, for a replacement.
But then, this is HN - we're not typical of the rest of the world. Much as many folk seem to enjoy keeping up with the latest and greatest phones, I only reluctantly moved from a well-used iPhone 3G to a 5s. (A great improvement in internal tech, absolutely, but I miss that smaller screen, where everything was reachable with the thumb, in one hand - even the 5s' tall screen means having to shift its position for some applications, even aside from the current series. So it goes)
But then, this is HN - we're not typical of the rest of the world. Much as many folk seem to enjoy keeping up with the latest and greatest phones, I only reluctantly moved from a well-used iPhone 3G to a 5s. (A great improvement in internal tech, absolutely, but I miss that smaller screen, where everything was reachable with the thumb, in one hand - even the 5s' tall screen means having to shift its position for some applications, even aside from the current series. So it goes)