Apple is on the third revision of it's hugely popular touch-screen device, and yet, to this day I still can't find a justifiable reason to purchase one.As a bit of background, I love electronics, and this is what I currently spend my time with on a daily basis (in varying percentage):-iMac
-MacBook Air
-Kindle (I can't read ebooks on a backlit screen)
-iPhone
-Apple TV
-PlayStation 3Those are the core pieces of electronics I use, typically in conjunction with one another, but, even today, I can't find a fit for the iPad.At first I thought it would be great to just lounge around and use it to read some websites on the couch, but my MacBook ...