Built-in backup system, both to "cloud" if desired or external hard disk if preferred. Application signing that serves to protect users rather than nag them into unquestioningly running anything and everything as administrator.
Fantastic, fully native support for the wealth of open-source software available for UNIX/BSD.
Apple hasn't dropped the ball. You'll realize this once you end up in the Windows world frustrated and trying to do the same things you take for granted now.