Nobody else offers the same combination of battery life to performance/weight, build quality, keyboard, trackpad, and screen. Of course it's not perfect for everbody and you might have different priorities but I think the MacBook gets most of them right for most people.
Some come close on a few of those points but if you want official linux support your choice is very limited. Perhaps that doesn't matter to you but I don't want to even think about if updating my daily driver is going to result in a broken webcam or flaky wifi or bad power management.
I'm holding out hope for the new snapdragon based laptops. They seem pretty close!