I'm afraid you're just falling for the hype. Apple has done an excellent job at promoting their image as the hip and secure operating system. I'd be curious to hear your thoughts a few months in. I ended up returning my new mac.
It's very secure. Based on FreeBSD (I think?) how could it not be secure?
The problem with their hip image is that corporate users aren't hip and probably won't go for it. And that's about it, otherwise, Macs are quite solid machines and OS X is fantastic. Whenever I use OpenOffice I want to puke just because Apple Pages and KeyNote look and work great.