After 10 years of not having a single positive detected by my anti-virus program I uninstalled it. If you already have a certain amount of PC knowledge it doesn

After 10 years of not having a single positive detected by my anti-virus program I uninstalled it. If you already have a certain amount of PC knowledge it doesn't really improve your security any more. AV-scanner find the kind of malware that spreads via e-mail attachments or warez downloads and those can be easily avoided. And if someone is really after you with a hot new exploit your anti-virus is probably the last to recognize it.