As a recent tablet owner, I can speak for its usefulness in certain settings, but can I see it replacing what a laptop can do for me? No. Having said that, I think that our lives have been forever changed by things like the iPad and to a lesser extent other tablets like the Nexus 7. The way we act and behave on a daily basis is almost exclusively focused on mobile computing. And those devices that aid us in our quest to always be connected.
Sound off in the comments if you have an opinion!