Earlier quoted context omitted.
OSX is very good at not having hardware compatibility issues, and you don't need to interact with it very much to open VirtualBox. While this is not the most performant option (OSX idles with a good chunk of RAM), it is probably the easiest and most reliable path to not worrying about hardware compatibility, drivers, etc.
"OS X is very good at not having hardware compatibility issues" is a really, really old (and flawed) argument. The thing that makes OS X so darn "stable" is that they write drivers for a very limited set of hardware - the reference implementation. On the Linux reference implementation, everything works properly (See the ThinkPad T series). On the Windows reference implementation, everything works properly (See the Su…
No one is advocating doing that. And no one gives a shit about how hard it was for the engineers.
You should buy a Macbook precisely because it is a reference implementation that works as a consumer product. Let OSX deal with laptop-y details like WiFi, screen brightness, battery/power management, suspend/resume, and device drivers. Let VirtualBox abstract away those details so FreeBSD behaves like it does on its reference implementation - server hardware.