I don't think so. I mean, sure it's cool that they are portable and some of them good, but desktops has alot more powerfull hardware and if not it is easy to upgrade.
Macs are cool! I dont need to buy a mac to get the "mac experience". I have a DVD-R with something called Kalyway OS X on it. It is a patched version of the mac operating system, so you can install it on any pc :)