I think so too. We've enjoyed some good times with security-through-obsecurity on OSX but it's not going to last forever. I'm leaning towards wanting most of my apps being vetted and distributed through a trusted source. Of course I would want to keep the option to install anything I wanted. Given the choice I would choose to install via a Mac App Store whenever possible. I feel like anti-virus, anti-malware, etc are like missile defense. Yeah it might work most of the time, in theory, but if one slips past and hits your city it doesn't really matter. I find when I use Windows these days I am irrationally paranoid about installing <i>any</i> third party software. If/When OSX increases in popularity and becomes a bigger target I fear the same thing will happen.