You Don't Need an Antivirus (Except Microsoft's Built-in on Windows), Says Former Firefox Developer (ocallahan.org)
Former Firefox developer Robert O'Callahan believes that antivirus software is not necessary, AV vendors are of little help, and that you should uninstall your antivirus software immediately. From a blog post: Users have been fooled into associating AV vendors with security and you don't want AV vendors bad-mouthing your product. AV software is broadly installed and when it breaks your product, you need the cooperation of AV vendors to fix it. (You can't tell users to turn off AV software because if anything bad were to happen that the AV software might have prevented, you'll catch the blame.) When your product crashes on startup due to AV interference, users blame your product, not AV. Worse still, if they make your product incredibly slow and bloated, users just think that's how your product is.
These days one of the best AV products is a good ad blocker. I can protect myself from sketchy downloads: don't download sketchy software or from sketchy sites. I can't prevent some asshat from exploiting a zero day in a browser through an ad on a mainstream site, except by blocking all ads on all sites.
*Yes, trusted sites can be comprised and it's happened in the past where downloads were infected but the odds that I'll download that software during that window where the infected files are being handed out are about the same as me getting stuck by lightning.
I browse on +1 so AC's need not respond, I won't see it.