i dont use any antivirus but then im a security guy and really know my stuff..i recommend nod32 to everybody as its fast and updated daily..winxp/vista/win7 firewalls are good enough if you dont add random softwares into allow list
I define my own firewall ruleset, don't need any silly point and click. Lazy is for people who need a GUI to set firewall ruleset. In GNU/Linux people define their own ruleset using IPTables.