I Still don't get it, as JoeyDrummer17 said, buy a nice MacBook Air
I should really let sleeping dogs lie, but I ran across this image which I felt somewhat illustrates my point..
Here we see one of those aforementioned MacBook Airs being used as a desktop computer. Now to apply the same logic why not just buy a nice Mac Mini? However just because someone occasionally uses it as a desktop, that doesn't change the fact that this is a fully functional notebook computer when you leave all the other stuff behind. Similarly using a keyboard and/or mouse with the iPad does not change the fact that it is a fully functional tablet.