I don't know your circumstances of course, but I'm anal enough about this that I'd consider that a deal breaker.
An employer that forces me to use an OS that treats me like the audience to a television soap opera (meaning, a dumb shmuck who can be puppeted around) is not worth it, it'll kill my joy in working real quick. Tried it, it was horror. So right now, I'd say I'd rather drink my own piss than use a windows box as my daily workstation.