Reasons for buying other laptop (at least for developers):
1. Better choice of desktop environment (KDE/GNOME vs OS X)
2. Wider/better selection of applications
3. Better development environment
4. Ease of deployment of your own apps
5. Better fit for your budget (why spend 3000 Euros on a
limited set of features, when you can spend the same amount and get huge number of features/better features)
6. Capability to connect upto 3 external displays (which Macbook has got only recently)
There's no chance I use a Linux laptop again. The Mac will run all the open source type stuff out of the box most of the time, or if you're really deploying for Linux only then you use Docker anyway.
#2 is untrue unless you're installing Windows. #3, well somehow there's no iTerm2 equivalent on Linux, and the terminal emu is one thing you'll always use even when SSHing elsewhere. #6 is a serious point, though.
1. Better choice of desktop environment (KDE/GNOME vs OS X)
2. Wider/better selection of applications
3. Better development environment
4. Ease of deployment of your own apps
5. Better fit for your budget (why spend 3000 Euros on a limited set of features, when you can spend the same amount and get huge number of features/better features)
6. Capability to connect upto 3 external displays (which Macbook has got only recently)