Recommending otherwise to anyone but yourself is arrogance, personal choice is fine, we all have the right to be arrogant with our own computers, but not someone else's.
No one in this thread has recommended using no antivirus.
Some of us have simply stated we don't find it necessary personally.
I'm not an average user.
I'm the guy who cleans up infected systems pretty much every day of my work week.
There's a very clear correlation between ignorance & infections, & i see it every day. :\
Internet-savvy people rarely get infected, & if they do, they are generally prepared in the sense that they've already backed up their stuff, & are aware that wiping the HDD & reloading the OS is the safest way to clean stuff up.
Internet-dumb people will infect their systems
repeatedly, even with the very best virus-protection installed & updated, because fact of the matter is, most issues don't just magically get installed without user interaction.
They come in thru opening that email attachment from an unknown sender, from clicking that "Download free system tuneup", from their beloved Limewire downloads, & so on.
This is not to say people shouldn't run antivirus. The average user most definitely should be, & i don't even advise using free ones, because IME, they are not as effective as something like Kaspersky Internet Security, etc.
I used to run stuff myself too, but as the only time i've gotten infected in the past many many years is through my own mistake, i stopped bothering. If i was to get infected again, so be it. I'm well aware it's my own risk/responsibility.
Sorry about the derailment OP; hope you got some answers in this thread anyway.