Interesting. I haven't seen the "no apps for the Mac" problem in quite some time; it has Office, it's got a cheaper Project alternative (Merlin) and a lot of the stuff I use has some kind of OSX port or is POSIX compliant.
And in Office's case, it is an improvement over the Windows version. It retains the menus, and the Ribbon is smaller and thus eats less screen space.
Indeed, most of my COTS needs are covered by basic stuff, while the rest are mostly UNIX based so I either gain the ability to do it on my main OS, or I pull out a Linux VM which I would need with Windows anyway.
And I have to really thank Ballmer for this switch. Windows 8's Fabulous Fred interface was the final nail in the coffin, I either had to buy a fugly Win8-hobbled laptop or a Mac last December for my new job ... so I went for the Mac. I haven't looked back since, even if OSX does crash every now and then.