I went for a long time without an AV and probably still would if I didn't download stuff from people--even though it's mostly people I know, I'm still careful. I generally can't stand most AV's or Internet Security Suites. They are such hogs!
I've never even heard of these AV's you guys have mentioned on this thread, I use AVG Free simply just to scan anything I download and because I can barely tell it's running ever, no matter what machine I put it on. Are there better ones that run just as smooth, and are those free? Just curious, thanks.