I went from using a 'Free' service through my internet provider to Webroot on the suggestion of my daughter. I was having some 'obvious' issues. Since installing Webroot on our 3 home computers and both our Android Phones, we're 'Glitch FREE'! Completely protects me from from 'unsafe' sites that our old 'security' would actually load. I love the 24/7 coverage too! You've got a customer for life here.
I have used Webroot SecureAnywhere AntiVirus for about 10 years now. I have never had a problem with this AntiVirus, and it has worked great for me. It is easy to purchase, download, and install as well which makes it an even better purchase for consumers such as myself. I highly recommend this AntiVirus.
Yes, Viruses have been around since the early days of IBM computers and I've worked directly in past lives with anti-virus companies, sampling and eradicating virus's on floppy disks, (remember those). I've referred friends to all the free ones, but for the last five plus years, I won't suggest anything besides Webroot. It responds quickly when you "accidentally" do something dumb. (We all do). It's by far the lowest user of resources. It updates unobtrusively. It has only "false reported" on me once and the fix was relatively easy. Better aggressive and cry wolf occasionally than have the wolf eat you. The option of using on 3 computers is a money saver and a time saver.