LOL toupsie. I guess I should give you an "A" for zeal.
My sister's Mac (which is configured for hardcore work, like graphics editing and such) crashes several times a day, although she denied it ever went down. So one day, her husband and I were watching her from ICQ, and counted how many times her name went off-line. It happened at least 6 times that day, and each time was a verified reboot of the system. This was Mac OS 8, I believe. That experience left me to wonder weather or not many Mac users are just oblivious to the number of problems their systems have just because they're told the Mac is "painless". I was using Windows NT (this was two years ago), and so was her husband... we did not reboot once that day. I could honestly tell you that that would not have been the case if I was using Windows 9x/Me. The things I do would crash any non-pre emptive multi-tasking and non-crash protection OS in a second.
As for worms and security problems, any decent administrator who's done his homework knows that Windows appears to have the number of security problems it has because it is the prominent OS today. Twenty years ago, it was Unix, and boy let me tell you, there were lots of Unix exploits back then. If Unix was as popular to the general population as Windows and Max OS is today, it would have made the same kind of headlines. In fact, back in the 80's a student was able to write a unix worm that took down the entire internet as it existed back then. He didn't even intend to crash the network. Unix has the "secure" reputation it has today because each favor of Unix has been put through the fire that Windows NT/2000/XP is being put through today.
As for the Mac OS not having security issues? Well, before MacOS X what security was there? MacOS X is based on FreeBSD, so hopefully it's got the security of any FreeBSD based kernel.