Earlier quoted context omitted.
For developers OSX will almost always be worse than a Linux distro, if only because of package management.
As a developer I work with text all day, a task made thoroughly more pleasant with good font rendering and proper HiDPI support, neither of which are available on Linux. I'll take my 13 inches of Retina display over a pair of 27-inch externals any day. SSH and rsync for remote editing work just fine from an rMBP.
Don't bother trying to connect an external monitor with a different DPI though, hehe. I've heard that problem is unsolvable with the X11 paradigm but will be fixed in Wayland (whatever that is).