No. I've got a perfectly good MacBook and, more important, an iPad. If I ever get on an airplane again, I'll take the iPad instead of either a netbook or laptop unless I'm going to be away for a week or more. if I eventually get a nep laptop, it'll probably be a desktop replacement model that I can use when Helen's on the computer.
As always, of course, YMMV. For those of you sticking with laptops and netbooks, you ought to check out Charles Stross' review of the new Apple offerings.