I've derided tablets as being restrictive and generally poor imitations of actual computing devices and bemoaned their lack of input options. However, this previous Christmas season, I think I've come around on the process. My aging grandparents, now in their 80s, struggle regularly with a laptop or desktop computer but immediately figured out how to use Skype, e-mail, web browsing and a handful of other day-to-day activities far easier than they were ever able to on a full computer.
A friend's mother reports a similar experience: from being unable to manipulate a computer into doing pretty much anything other than going to Google, she set up and checked her own e-mail account she hadn't accessed in years, made Skype calls to other relatives, downloaded and then effectively used several Bible-related applications, and watched a movie.
Tablets are a great choice for someone who only wants to consume content, with little interaction with it. While I don't understand how these otherwise very intelligent, although non-technical people can have so much trouble in the first place clearly there's an unmet need for consumer-functional computing out there.