I have been very tempted to get a 7" tablet... because there are some things I like.
What I really want is a smaller netbook that does not have a permanently attached keyboard, that I can attach one to only when I need one.
A netbook which boots instantly, with a screen that does not suck.
However....
* The user interface sucks. Face it. Android sucks. iOS is going to suck even more with iOS 7. Not responsive enough. Common old user interface principles such as cancelability and affordance have been thrown out of the window. Not consistent enough. Difficult to use multiple apps at the same time. Not to mention that the user interfaces are ugly and have very white text on very light backgrounds or are very dark.
* I can't seem to be able to do the thing that I most often use a netbook for: offload the images from my camera and do photo editing in the Gimp, before I upload the image to the Net. I don't know if there is any similar functionality available in an app or something. At least, I have not seen any tablet that has a file browser.
The only 7" tablet that seems to be any reasonable performance, according to reviews, are the Nexus 7 (both old and new) ... but those don't have any SD card slot, and I don't know if there is any way to connect the camera to it directly (the camera wants to recharge from the USB anyway, that would drain the tablet's battery, right?)
I had also been thinking of perhaps using a tablet for note-taking, instead of using a physical paper notepad. Something with a good pen, and proper character recognition.
I have tried the Samsung Galaxy Note tablet and phone, and they SUCK BALLS! The pen input lags behind a few seconds, pen can not be used for text input in every app, and the built-in pen apps are ridiculously unstable, crashing after five seconds of use.