Is it safe to still use OSX Lion?

Thanks for your reply Cameron. To me, however, it sounds more like a "gut feeling" of yours than a technical answer. I'm facing the same question as was asked in the original post. My gut feeling however tells me that there must be multiple exposed vulnerabilities by now that were never addressed by any update for Lion. Thus I would like to know whether anyone with enough technical insight could comment on if using such a machine behind a firewall of a modern router and possibly behind another software firewall on the machine itself (any suggestions which?) might still be safe despite Lion not having received updates for ages... That is assuming to be using a modern browser and not the Lion version of Safari of course. Thanks.

I disagree on the viruses. Apple is probably no longer issuing security updates for Loin. Apple products have become increasingly vulnerable to virus attacks over the last five years. In decades past Apple was not the target of attacks because they were the underdog and everyone went after Bill Gates because of the money. Now Apple has become a Target because of their greed. I feel it is almost mandatory to have a good paid for anti-virus on Macs now. 70% of the machines I get in are infected. Just stay away from the Russian product Kaspersky.