Why Macs are perceived to be more secure

The other day I came across this CNet article where true security experts such as Halvar Flake, Mikko Hypponen, and Bruce almighty Schneier himself weighed in, and they all agreed: it is safer to use a Mac, not because it is better designed (from a security stand point), but rather due to the economics of attacks - it simply makes more sense to attack the platform that has an overwhelmingly larger user base; you've got better tools to do so, and you've got better ROI.

It's settled, it can't be otherwise. Now stop telling us how Apple designs a more secure OS.