The reputation is in being the first. And that position has gone unfulfilled for six years.
This isn't really about Apple, but of the solid stability and security of BSD. BSD has been its own full OS, on the net and hacked on, since before Microsoft even released its first graphical shell to MS-DOS 3.1. Work began on the FreeBSD branch that Apple uses around the same time Microsoft released NT -- an OS designed to work with trusted users on small local networks. Other hardened systems use FreeBSD, such as VXWorks (the RTOS used in the Mars Rover and newer Linksys routers) and various other routers and firewalls.
You really must try to be this ignorant because even noobs can understand this. He gave an analogy of why a Mac virus wouldn't spread easily in the wild. So the first has already happened. A couple times but it keeps getting dismissed. Remember we spoke about 1 year ago on the exploit available in the initial release of OSX. Yes it was patched but if you install osX without patching you would be vulnerable out of the box. Now with MOAB #1 we have again proof that osX is exploitable, but the mac faithful keep downplaying it and obfuscating the issue. They can do this by saying it's not in the wild. Reason it's not in the wild is as crusher detailed...there aren't enough machines to spread it properly.
Remember just because it isn't in the wild doesn't mean it can't exist. An exploitable hole is an exploitable hole.
Hackers are cowards and no way do they want every news agency in the world looking for them so justice could be served. They'll continue to hack Windows for fun or profit and maintain their pathetic obscurity.