I'm wondering if Gentoo desktop installations are a good thing for the environment. When I don't need my computer I tend to switch it off, since it'll only take some minute to start it up again if I want it.
But I find with Gentoo I must leave my computer on all night sometimes for things to compile. I would normally switch my computer off overnight - to save the environment, the electricity bills and so that I have less background noise when sleeping.
But since Gentoo compiles things my computer must be on when I don't want it to be for me to get an up to date system. With a binary distribution it doesn't usually take more than some half hour to download a set of updates and install them - thus the computer may be on less, and use less electricity.