Here's the thing: On most laptops, most things will work "OK enough" under Linux. But there always seems to be some kind of small issue. And even when it works, it often stops working after an upgrade. Like my Toshiba that worked well until an upgrade suddenly made it unable to boot into X, or my ThinkPad that had the annoying fan running all the time for no apparent reason.

That's the problem. It means that if you're a linux expert and can spend some time fixing things each time they break, Linux on Laptops is great. And you're in a better position to fix things when they do, since you can modify the source.