[PaulsWallet]

As much as I understand the reasoning behind this thought, I do not agree with it. Yes, my devices are tools and as much as possible, I'd like to keep my tools looking nice. For me, part of that is having a nice wallpaper. I am forced to use a Windows computer at work but you know what? I actually like the new picture they use on the lock screen everyday. It's simply the feeling of "oh that's a nice looking place" and then getting to work.

[setr]

I just despise the fact that you can’t go back from login to the wallpaper, because I always end up processing that the image was interesting after the going through the motions

[sshine]

My login screen wallpaper stays as the background wallpaper. I find this very enjoyable.

A lot of Linux login managers (e.g. slim) make this the default. So all you need to do is cycle the picture that the login manager references.