most of them don't care or want to know how to get rid of all the spyware and virusesThey're finding out how -- dump Microsoft OS.
In my case, I had to have an intervention to switch my parents over to a Mac. The Dell they had was overflowing with viruses and spyware and I'd spend a day or so cleaning it off only to return every 6 months and repeat the exercise. It was slightly easier to make the transition because a few of my mom's friends have switched.