You think you know your operating system? Trying using it for 12 blog posts a night. With video capture and editing and encoding and uploading. Heavy picture downloading, cropping and scaling. Heavy RSS skimming across hundreds of feeds. Heavy Web surfing. Streaming in lots of video. Heavy email use. Constant IM. Ten different things going on at once in the name of speed on a busy news night.
You'll discover how weak your tools really are, even when they're the best the world has to offer. Not just the OS but your Web services (Google), third-party software (ecto, Photoshop, Visual Hub, SnapzPro) and Apple sofware (iMovie, Preview, Safari, iChat).
They will break your heart and, worse, waste your time night after night. It doesn't matter if it's a brand new multicore machine with the RAM maxed out. It doesn't matter if it's built on a Unix core that's supposed to have protected memory and preemptive multitasking. OS X WILL have a hard crash on you sooner or later. In my case, it happens once or twice every night.
Every crash sets me back a half hour or so. That's time out of my life and it adds up.
Hard things are hard to do. Fair enough. I didn't build a better system. But I hope Apple realizes how fragile its system is at publishing, 21st century style.