Moreover, XPSs have a screwed-in battery and replaceable keyboard, which would make restoring and reusing the laptop much more viable. With macbook, if you keyboard is broken, you trash half of the laptop, including the battery.
And the parts that I wasn't using after the upgrade I've all sold to other people who had their mobo or battery fail. Nothing was wasted.
All this and I've got a pretty slick looking powerful laptop!