Hi,
I just wanted to say that In my case, I opted for rooting because, being outside the US, the Amazon Apps store would not work for me. Now that I have the Google play store, I've been able to buy the drawing apps which were the main reason why I bought the KF in the first place - I'm not enough of an artist to invest on a >$400 tablet
I knew the downloads wouldn't be available from outside the USA, but I live on the border and go into the USA at least once a Month, so I tought I would be able to download using my friend's Wifi while in there; turned out that since
my credit card is not american (ironically, it is exactly the same one that they accepted to sell me the KF and which I've been using with them for years), they still won't let me download
any digital content anywhere in the world, including some books and magazines.
Just in case you were still wondering what reasons beyond changing the wallpaper there would be to root