OSX is an OS where you run VMs for Linux and Windows. I keep seeing people saying how great and fast it is to do stuff on their mac and run Windows for a few apps incl. mail client, office suites, some dev tools and many java apps (cause they're often not so nice on OSX)

Then I see them with the Linux VM for all the dev tools, the hack tools, and so forth, because, well, hacking them up to work in OSX is always a pain, and even using stuff like brew is often a pain (+ delay)

Well I dunno, I run Linux native and I get stuff done faster than the ones running Linux in a VM of course. I also have Linux VMs under Linux when necessary, with KSM and it's a lot faster and memory efficient than when running OSX native on the same hardware.

I install stuff in about <5s where it takes a VM to boot/resume in OSX, and about 5-10min to install from scratch when the app _supports_ OSX (ages if it doesn't but has more or less compliant sources)