I'm looking for a reason to justify buying myself a Retina Mini...

Hey guys, I've just seen the new Mini is out and it looks fantastic, but the more I think about it, the more I realise that I can't really see any use cases for it in my life (obviously this is subjective), as I already have an iPod Touch, Kindle Paperwhite and Macbook Pro (2009).

What do you guys mostly use your Minis (or even iPads and other tablets) for? I really want to have an excuse to get one :), and I keep seeing it recommended all over The Verge forums so I'm curious as to what people are using them for.