I was very interested in this article.
How we implemented linux in our ministry
Part of the decision making process for this ministry was the "... matter of stewardship ...".
I spend LARGE AMOUNTS of time researching malware techniques so that I can offer help to people that run operating systems other than Linux. I do hands on forensic and recovery work (for free) as part of that research.
Be a good steward of your time and money ... install Linux and enjoy computing again.
Oh, and take your kids out to the park with the free time you'll have not disinfecting, cleaning and defragging your current operating system.