App/package management on OS X is pretty bad, especially since there's no automated way to uninstall stuff. Yes, I know that you drag the app to the trash, but there's usually preference files, caches, folders in 'Application Support', etc, that get left behind unless you use a program such as AppZapper to get rid of them. Something like that should be built into OS X.

Although I've only used it on a server (and not a desktop), Debian/Ubuntu's aptitude/apt-get package system is probably the easiest thing I've ever used. It's awesome.