For me, it's all about reading and e-books and content on the iPad Mini, and I already had so much content purchased before on various iDevices. It's the ecosystem that I have already invested in for some time, and things like Viz Manga and DCcomics and Marvel Comics just look better with their apps on iOS too. Most importantly the iBooks that I purchased in the iBookstore are there when I want to read them, and these things are iOS only reads so I'm pretty much set in a way on getting an iPad.
I used to have the large iPad and I felt it was way too unwieldy and large for my liking, so I went for the smaller iPad Mini. I can live without retina on this thing when it is this portable. It has literally become my one stop shop for content nowadays, and as I'm a Blackberry phone user this is my worthy companion.
I would have gone for the new generation Nexus 7, with the vastly better specifications, but without my iBooks I don't see how it makes sense for me unless I had too much cash to throw around for gadgets.