perfect_numberAloSecsteam hardware survey, 95.49% of all steam users use Windows, while just 1.13% use linux. if I were to code a virus, I would know which OS I'd target.
Definitely a valid point, I never disagreed. I was referring more to viruses in general. But lets not turn this thread into a holy war.
I would say that steam has a fairly high percentage of linux users compared to most other demographics. So I doubt there is any other circumstance where it would be cost-effective to make a Linux virus, regardless of the difficulty.