I can think of quite a few things I'd be happy to delegate to a machine were it possible and practical. Do you really enjoy doing laundry? I'd be happy just dropping dirty garments in an automated laundry basket and waking up to them clean tomorrow. Cooking dinner - yes, I do sometimes enjoy whipping up something tasty, but other times I just feel hungry: a Star Trek replicator would be great then (and indeed that's pretty much what home delivered takeaways offer now, and seem to make plenty of money at it).
If you're rich enough to have staff to take care of your laundry, cleaning, routine cooking (and cleaning up afterwards, which I'd very happily automate away!), your commute (again, I'd love a taxi/chauffeur user-experience with my car: get in, state your destination, get on with some reading/sleep/eat etc), yes, you have little to gain - but the rest of us will certainly benefit.
Tablets ... earlier today, I was going through email and making some schema changes on a remote database server. The email side, I find I DO often use a tablet already; the schema changes, a tablet would have been fine for since I was using a web interface (legacy app, the one SQL Server instance I still babysit; the rest's MySQL).
Everything I've done on this laptop today could quite easily have been done on a tablet right now, if I wanted; I spent a while SSHed into some colocated servers, moving data around, which would be slightly less convenient without multiple side-by-side windows, but nothing major - and nothing that couldn't be fixed quite easily in time. There are already developers with similar setups to mine making increasing use of tablets quite happily.