I use about 1/2 of what Logan does. A/V, two spyware apps (not resident), NAT router w/firewall & an updated OS. That and "Practice Safe Hex" has worked very well for me over the years.
Unfortunately, common users barely know what spyware is, much less understand how to remove it, or even why it's bad to have. I've made about $1000.00 over the last year repairing people's machines because of it.