I've owned my N800 since mid-january and I normally have a laptop within easy reach. I estimate that my laptop usage has dropped by 50% since I got the N800, which I find more convenient and more fun for many purposes.

By the way: I have noticed that, in contrast to those who say that the N800 is primarily for Internet usage, a lot of stuff I use it for doesn't require the Internet most of the time: reading books or listening to audiobooks, for example, or using the spreadsheet. I have been embarrassed to discover that the Internet connection was down and I was so absorbed in my N800 that I hadn't missed the net.