I hate to say “me too”, but yeah. I’m running Rhino 5, feeding a CAD
program, and I went out and bought a PC, just to run it.
I’ve had Macs or Apples going back to the 2e, and I still ended up
getting a dedicated PC for CAD work. I did fuss around with the Mac
build of rhino4, a few years back, and it doesn’t look like they’ve
made much progress with it in the meantime. The PC version is
definitely where their energy is going.