Over a Million Zombie PCs
Doyle writes "A BBC article discusses new research revealing that over 1 million computers have been compromised and are being used in bot nets. From the article: 'The largest network spied on by the team was made up of 50,000 hijacked home computers.'"
As long as you keep giving Apple money for updates, yes. Remember, OS X from 2001 is not updated even for security issues but windows 98 still is.
Enough deployment of a non secured OS and it will lead to problems even if it's a Mac. Apple does get away with not securing their old OSes only because they are not widely deployed.
If I buy a Mac today, who knows if I get updates 3 years from now?