I believe they will be found running all over the place displaying pages of information on walls nightstands, kitchen recipe stands. I suppose in a decade, they will be soft and pliable, extensible, faster, solar powerered, etc. but unlike the PC the Tablet format is a way of presenting information that has been around since Sumer.
Nearly ten-thousand original iPads were donated by upgrading customers, to give to economically deprived schools a chance to own one for their classrooms. Source.