Ubuntu has some major advantages though:
* Software - the software in Debian repos, even with testing/unstable repos are not recent enough for my liking. Sure, the Ubuntu repositories don't always get updated with the latest versions of stuff, but that's what PPAs are for.
* PPAs - as above, but also to provide easy access to software that's not in the official repositories to begin with.
* Font rendering - Debian, due to issues with patents or some other legal concern, does not have proper sub-pixel rendering on fonts like Ubuntu does. Some people don't mind this, but sub-pixel rendering is amazingly useful for improved font quality. Microsoft might have ditched it for Windows 8/Office 2013, but they're throwing the desktop under a bus anyway and don't care if things render crap anymore, but I still care.
* Community - the Ubuntu community is full of fanboys and morons who don't know much if anything about Linux itself, but there's a definite benefit in having that userbase when things go wrong or you need help with something. Windows has a program and solution for every task/problem - the massive userbase is an extremely large reason for that.
Having said that, Debian would be perfect for me if I wanted to tailor a distro for an embedded system, one that wouldn't need the benefits listed above and was focused on specific tasks. If I ever get around to building an Iron Man suit, the OS will be running Debian I can assure you. :)