Comment by ButlerianJihad

Checking out username: FAILED...

Anyway, the main issue with Debian, Ubuntu, and Nvidia is about licensing. GNU/Linux is free software, and Nvidia drivers are not. Loading a non-free driver is known as “Tainting the Kernel”.

https://wiki.debian.org/NvidiaGraphicsDrivers

The information on their wiki may be a year out of date. But the principles still apply.