I know, that's why I spent a fortune on finding the right chair, the right keyboard and the right combo of pointing devices. I have a closet with a dozen keyboards and 20+ mice that should've gone on eBay a long time ago.Its the little things. Comfortable mouse with 2d scrolling, keyboard with a good feel, little os flourishes like squeezing the mouse to see all screens, hot corners, less resource hungry os.
Attention to detail and good design on the little things increase your satisfaction and productivity.
I use pcs and macs side by side at home and at work.
I know which is more comfortable to use.
And if you are spending 8hrs a day working on a machine - its the little things that matter. A uncomfortable chair will diminish your work to some degree.
But it's precisely those little things that keep me from going Mac all the way, I spend about 75% of my work time on PC and 25% on Mac -- both have annoying quirks that get in my way. There are little things I love in OS X, like QuickLook, Spaces and Exposé, but there's also the retarded context-sensitive menu bar at the top of the screen (not so convenient on a dual-screen setup, huh), the propensity for desktop clutter and the single resize handle at the bottom right corner. Or the fact that save/load dialogs don't have full Finder functionality, or that Finder doesn't do cut/copy/paste of files. Those little things are to me what a mouse with spikes would be to you. Should Snow Leopard address those issues I'd be more than happy to switch, but right now, Windows is more in tune with my workflow because of all those little things.