Freeing your Android device is nothing on whatever the massive 20GB of code running under Windows might be doing at any moments notice. I'd never tell someone to try to run a secure and privacy preserving version of Android while they were still using Windows as their primary productivity OS.
Why are people downvoting this? Just because you don't like it doesn't make it not true. You may be able to argue that Windows is necessary (ha! for rooting Android? why is that?), but that doesn't make the most insecure and malware-ridden platform out there exempt or immune from criticism, especially since you can't see the code. Same goes for OSX.