Yes, this can absolutely be an annoyance, and I fully agree with you in that it can take a lot of physical movement to reach from one side of a screen to the other in order to hit, for example, the File menu in OSX. I've run into this on several jobs. But you're conflating annoyance in certain configurations with the overall usefulness of an interface.
It all depends on how you tend to arrange your windows on screen, what pointing device you use, what programs you use and how they utilize individual windows and whether those draw menus using Apple's API or not, etc. The benefit of having an infinite vertical target to play with when hitting that stationary menu has been shown to trump the effort it takes to reach that area. Whether or not your particular setup produces a situation of frequent laborious (not sarcastically used) trips to the menu bar has nothing to do with whether or not it's a good idea to build a general computing UI that way. Having the option to include multiple instances of the menu bar on multiple screens would be ugly as hell, but still faster than bar-per-window.
Dual 30"ers? Awesome? Yeah. Necessary for lots of people? Absolutely. But you're nowhere near the total desktop aspect ratio of the vast majority of users.
Also, not flaming, just verbose.
Also, also, nothing I said has anything to do with Windows Phone.