[millstone]

"Package management" is the wrong term. OS X just makes installing software less terrifying.

Let's say you wanted to install Google Chrome. On OS X, you go to chrome.com and click the single "Download now" button, and it downloads.

On Linux, you get the same button, except clicking it takes you to another screen where you have to know whether you are a "Debian/Ubuntu" or a "Fedora/openSUSE" user or need a "community supported" version, and whether you want the 32 bit or 64 bit version, and whether you want to "add the Google repository to your system", and here's a thing to run on the command line if you don't want that.

The "sudo apt-get install yadayada" stuff is legitimately great for power users. But for most consumers, the OS X approach is definitely to be preferred.