Tablets are seriously fat iPod Touchs.
The only people who would need them are business employees who are way too cheap for an actual laptop (the surface is a great alternative), people who do digital art and are on the go, and college students who again are too cheap to get a proper laptop.
What the forget is a bigger screen going to do for the normal consumer, aside from allow their fat fingers to push buttons slightly easier?
It is NOT convenient to haul around a loving 9 inch box that won't fit in your pocket, so if you want to put it away, you've suddenly got to have a bag.