Buy a PC, you can run Windows. Buy a Mac, you can run OS X and Windows (and Linux) at the same time. Not only that, but now you can run Windows apps "rootless" (i.e. without them having to reside within a "host" Windows window). Check it out.
If you decide you hate OS X, just install Windows and it becomes a very nice PC.
Unsurprisingly that doesn't happen very often. =)