It's not like a boot disk. It's having a pristine platform to run your games from and having all your Windows installed shitware where it belongs, in Windows, king of all shitware.
Given how many guildmates PC's I've had to clean/fix just so they wouldn't crash in raids over the years, it doesn't surprise me that most people have absolutely no idea how to keep Windows clean.
Personally, I mount a VHD and boot to it when I have to print something, because I won't install printer drivers on my primary windows install. My primary windows install has an extremely low service profile.
Given how many guildmates PC's I've had to clean/fix just so they wouldn't crash in raids over the years, it doesn't surprise me that most people have absolutely no idea how to keep Windows clean.
Personally, I mount a VHD and boot to it when I have to print something, because I won't install printer drivers on my primary windows install. My primary windows install has an extremely low service profile.