If you hold up a Gen 1 iPad now they look old and are HEAVY. At the time though - bees knees.
Yes RT could become competitive and completely agree there is a place for it in the market. It will never be market leader though. Needs to be untied from the desktop. At the moment Surface ecosystem is Windows -yuk.
iPad is iTunes which is bad but its the 7000 million gig of music, movies and photos you have.
My PDF collection is 300GB alone in contracts files. My clients love me though. As I always have their contracts on hand. Even the ones from 5 years ago.
No one is going to wrestle me away from that sort of productivity.
And lastly. Battery life. It is the be all and end all of any device. I don't care what that device is. If you can't provide me 1 whole work day of battery life then go ¥¥@ yourself.