Any need for Antivirus
It is commonly accepted that Macs do not really need an antivirus program due to the efficiency of their OS's security, however I do accept that considering the fact that some of us are using Windows on our macs and due to that, macs have become prone to viruses. There is also another added element agreed that with the increasing popularity of macs, there is a need for an antivirus.
OK... my question is....
1. If someone uses only Mac OS and Mac programs without any interaction of Windows(bootcamp) or Fusion, etc... on his/her machine, does he/she still need an antivirus program??
2. If yes, which antivirus is there (other than Norton) that is not resource hungry and provides excellent coverage from viruses, malware, etc...