It's not outdated, it just works and I don't want to have to install a third-party program for something that used to be there with the OS.
This makes absolutely zero sense. Installing 3rd party applications to gain non-native or improved functionality within an OS is common across every OS in existence. What's so difficult and inherently offensive about taking 60 seconds out of your life and installing a 3rd party application to gain functionality that you want?
I can understand not wanting to drop the money to upgrade. Or coming to the conclusion that that the jump from Windows 7 to 8 is not significant enough to warrant the hassle of upgrading. But for reasons that amount to pettiness and laziness?