The Mac mouse system is broken by design.
It's a bit like iPhone 4s being suitable for right-handers but being utterly useless for left-handers. (I say this as an iPhone 4 owner myself.) Whomever designed the acceleration curve - and then made it a design decision to omit preferences about disabling or modifying the acceleration curve, represents the epitome of Apple's "it's our way or the highway" approach to human-computer interaction. If you happen to fit into that 5% or so who like it that way, good. If you don't, well, that's just tough.
It's not like adding a checkbox to enable/disable mouse acceleration is particularly hard, or "confusing" for the user. Hell, Windows isn't the most user-friendly of operating systems, and even that has had it for years. I'm an IT guy and I have to spend my billable hours in front of Solaris, AIX, HP-UX, Linux and Windows boxen. But I'm personally really glad the Mac hasn't caught on in the IT world, because the Mac's mouse movement is, for want of a better word, crap. Even IBM's OS/2 was better, and that's saying something. Even Mac owners I know who play games have actually been paying for Windows licences to install on their Macs via Boot Camp, because they're always getting fragged by the competition who play using mice under Windows. (Well, that and the fact that quite a few games run faster under Windows than Mac OS on the same hardware.)
The mouse is an analogue device, and I expect to be able to use it as such. The last time I had cause to use mouse acceleration was back in the day when I was using the Advanced Art Studio on a Commodore 64. (The mouse I was using back then was *not* analogue, and effectively behaved like a joystick.) If I want a large movement on the screen, then I will make a large movement on my desktop. Not exactly a difficult concept to grasp, yet this has eluded Apple's best and brightest for many years - judging by the number of Google hits I found for this defective piece of UI engineering. People have been complaining for years - you guys are NOT the first - and nothing has happened as a result.
I've no issue with people who use trackpads, for whom mouse acceleration may be more helpful. I've no issue with people who choose to use tablets, or joysticks or Voodoo charms to control their cursors. But there is such a thing out there in userland called "choice", and it's about time we had some with regard to mouse acceleration on the Mac. I think it says a lot when I find my Mac far more usable via a PC console using VNC (or preferably, where possible, using SSH), than actually sitting at the console and using the Mac directly. Fortunately, I only use my Mac mini for iPhone development (using a PC keyboard, naturally - Apple keyboards are an exercise in masochism) - I refuse to touch it for anything else, until Apple manage to match Microsoft in terms of "user experience". Yeah, I'm talking to you, Steve Jobs.
I leave you with one thought: You see Apple Mac machines on sale everywhere, these days - we have several in the local Galeria Kaufhof (big shopping chains common in Germany), as well as some other chains and more specialist Mac places like Gravis and JCS - and they're always set up so you can have a little play on them. You know how first impressions count - I just wonder how many customers Apple already lost because someone tried moving the mouse around on an Apple demonstration computer, and the first thing that went through their mind was "Yuck!"