I began to keep track of which half was which. I don't say that lightly - it's something I've given a lot of time and thought to. Let's cut to it. This one constantly amazes me. Study after independent study has said that there is almost no real need to use PCs.
Most offices are fairly self-contained.
Besides, we all know Macs can read PC files, use PC disks, and connect to a PC network and so on. The average Wintel home user spends between 50 and 60 hours each year troubleshooting their computer. So the Wintel user spends 50 hours more than the Mac user troubleshooting. I tend to place a lot of value on my time - so much so that I couldn't warrant spending an extra 50 hours on my computer. But then again, I don't need to.