That's an admirable trait.Tell that to the Windows malware infestation.
Windows XP:
http://secunia.com/advisories/product/22/
Affected By 342 Secunia advisories
424 Vulnerabilities
OtherOS(FreeBSD)
http://secunia.com/advisories/product/32931/
Affected By 2 Secunia advisories
3 Vulnerabilities
Try to list all the malware that affects Windows in a short list:
http://en.wikipedia.org/wiki/Linux_malware#Threats
Most of that malware has been made obsolete by update patches.