Personally, I think users of alternate OS'es are a touch overconfident about security issues. On the other hand, Symantec hasn't made a single product worth having for about six or seven years now. Seriously, their stuff blows any more, so they may be getting a bit desperate for new markets.
I remember when Norton/Symantec rocked. Their disk utilities were indispensable (defrag, error checking, and even setting the interleave on old drives), and their Norton Desktop made Windows 3.1 almost bearable (and zip files as folders didn't come back until Windows XP). But I haven't bought any of their products in years.
Maybe, but no more than users of mainstream OS's (read windows) ignore the serious problems that OS has had and chalk it up to market share not engineering.
Only a touch... I use a both a software firewall and hardware firewall... and my Mac is set to not respond to any external probe from the Internet. But, until a Mac virus is found in the wild, I see no reason to pay Symantec or any other anti-virus publisher for protection. When one is captured in the wild, and shown to be vicious, then I will consider it.
On the other hand, Symantec hasn't made a single product worth having for about six or seven years now.
Norton used to make an excellent suite of tools for cleaning, repairing, and maximizing Macintosh Harddrives, Norton Utilities. Since then I have seen nothing but bloat and processor intensive background junk. That happened after Norton fired all their original programers just after they moved into the Windows world...