I bought the first generation iPad as soon as it came out. Couldn't wait to own one. But three years later I still don't get it!
My problem is not so much the old argument about the iPad being a consumption rather than a production device. There are so many really effective tools that you can use on an iPad these days to do really useful work. In fact it was various podcasters' enthusiasm for those tools that made me go back and have a second try at using the iPad seriously. That and the fact that we are in need of moving tools around in the family again and I was interested to see if I could survive without my laptop. I can't.
My MacBook air is just too useful. I have it tricked out with all sorts of app launchers, text expanders, macros, productivity apps, and other apps that make it much easier for me to get more done faster and better. The combination of the best computer I have ever owned and my iPhone 5 is still impossible to beat. In contrast using the iPad was, for me, like wading through treacle.
To say I don't get it is perhaps unfair. I do get it, in the sense that it is an amazing device that is clearly useful to a lot of people. One day when I am feeling particularly flush I may get an iPad mini, but otherwise the iPad is not for me.
Maybe if my only other experience of computing was a work PC…