Re: OK. What's wrong with XP?
If you assume that menu bars have to be associated with windows, then, yes, OS X's menu bar will be extremely confusing to you. (As in: "what window is this thing for?") But if you can get past that mental limitation and realize that in OS X, menu bars are associated with *applications*, then the menu bar's location and operation make perfect sense and I don't see how it could be designed any other way.
I'd rather just have a UI that's easy to use. No, I don't mean TIFKAM.
When you click on a program, that means you want to use the program. Whether or not it's currently running is irrelevant.
You might have a terabyte of RAM and a ten-SSD stripe array plugged directly into the PCIe bus on a 16x slot, but I don't. Even if I did, I want to know what is running and what is not. At a glance.
Also, ever clicked the wrong button before? I'm assuming you're human and not a General System Vehicle or other synthetic intelligence that might be a few thousand times more accurate than your average meat-sack.
The hot corner stuff isn't enabled by default
Yes it is. Top right corner, zooms everything out and shows all of the windows. Sounds like a handy thing until you keep tripping it by accident.
And don't get me started on Explorer either.