Danmark is very much still Windows first country for developers. Macs are showing up more and more and a few can use Linux. The thing is, those companies I know who allow their developer to use Linux, provides their employees with two computers, a Linux developer workstation, and a Windows machine for "other stuff".

I have the same issue with defining exactly why I don't like Windows. Part of the issue is my hand cramps up when I use it, but I don't know why. Windows seems sluggish, but people who measure these things says that it's not.