Like everyone has said before me, it could replace your laptop. Since getting mine I have only had to open my laptop for flash material. I've owned this iPad for a month and a half. I can't tell you the last time I turned on my desktop. I have the "Pages" application for my documents and it does everything I need. I also purchased an HP ePrinter and print wirelessly with total satisfaction. I use this for work and home, love not having to take the laptop out anymore. I email customers their bills from an app in the app store while I am still there. They love it. Probably have sold a few iPads for Apple in the process. I know of at least 2.
It all comes down to what you need. If your wife is getting a Mac then this just might just work out for you. Good luck.