Why would disabling the ABS even cross your mind Dawg? It's not like some of the other stuff Harley has borrowed from the auto industry and promptly screwed up; the ABS seems to actually work now that Harley's first couple of year bugs have been worked out, and if it does fail it doesn't leave you stranded, it just reverts to plain old brakes. The only downside I can think of is the pump and module assembly does take up valuable real estate in the bowels of the bike.
If we consider the idea that a vast majority of bike riders lock up the rear brake in any sort of panic or near panic situation, thereby losing all control of where the bike is going, I'd say that for the majority ABS is a huge benefit. Sure, some expert riders can probably come close to matching the performance of ABS on a bike with standard brakes, but I'm betting the percentage is very small, just as it is in the automotive world.
Now if you were to start a thread asking if people would consider disabling ETC and installing a cable throttle, I bet you'd get of ton of positive responses.
Jerry