Linux

Ditto. Being behind a good firewall helps, too.
There is no truer truth than this. Its amazing how many decades of the same have passed, and people still think there is nothing wrong with certain operating system being always a malware nest. As if a bunch of antivirus would solve the problem.
Hint: McAfee became known to the IT world for his MSDOS antivirus in the late 80ies. Its been THAT long, i clearly remember printing the WHOLE list of viruses the tool could remove: 11.
Have you learn anything yet? Go Linux and say goodbye to malware already...