I never needed the ABS in my BMW, but was glad to have them, especially since I could bleed the whole system myself. Oh, and I had FULL braking power with the front lever, while the rear only operated the rear. Best of both worlds, IMO. By the way, I NEVER use the rear brake, since in a nonABS bike it's impossible to know what's happening in TWO tires. Since most of the braking force is in the front anyway, that's my choice.
Anyway, my only gripe with ABS is maintenance. Most manufacturers choose to design the modules to need a computer interface to push the pistons out to bleed the system correctly. I DON'T LIKE THAT, since I do all the service myself. And in the case of the BMW, you get slapped with $400 if you don't know how to do it yourself (11 valves to bleed, but it's easy).
Just like many, I prefer ABS, but it's not a deal breaker. And I don't justify more than a grand for it. By the way, I never ride in the rain on purpose, so for the couple of times I've ever seen rain, and the precautions I take while riding on it, the risk of needing ABS is extremely low. And yes, I also believe in training to become a better rider, and have been to 2 sessions at Superbike School, where they have a 'brake' bike on which you can lock up the brakes to know how it feels. All in all, depends on how, where, how, and how much you ride, plus the size of your pocket. The lower your confidence and higher the touring miles, it makes more sense.
Later gang.
JC