Recently started living with just my iPad. I now have all that I need on the iPad and switched off my beloved MacBook Pro a few days ago.
I know it would not be possible for everyone but I'm seeing how it goes for several weeks and if all is OK then the laptop will be up for sale.
The only issues are ones that I knew about beforehand. Unable to change the music on my iPod shuffle, unable to connect my GPS to download GPX walk files (I can do this at work) and had to buy a wi-fi printer.
So far so good