Do it yourself EHR on a Mac system

Over at apple.com they have a whole section on small businesses that use a mac. They profile a plastic surgeon MD who made his own EHR using Mac products. Very nice. Apple actively markets to health care professionals and shows us how we could use macs in our office.
I like the idea of using a mac. Less worry about viruses, spyware, etc. They say Macs “just work” while Windows PCs are more of a hobby (which implies they’re always breaking down, so you are always fixing them- like a classic car).
I’ve always used PCs, so I probably won’t convert to Mac. . yet; however, I would like to see the EHR companies develop platform independant solutions. That would make me very happy for if/when I do convert to Mac.