I remember the days when I used to work contract and at the end of my interview they ask me if I have any questions for them. My questions were always the same:
Will I at any point have to use windows?
Do any of my co-workers in IT choose to use windows on their work laptop?
If the answer to either of these were yes I'd always refuse the job.
Luckily now a days employers got the hint and usually go out of their way not to expose their programmers to windows.