I look at it this way:
Yes, one could learn to abuse the fact that they have ABS and feel they don't need to learn proper braking technique. IMO, you'd have to be pretty ignorant of riding mechanics to think like this. Some people will say it's good to learn on a non-ABS bike for this reason because you are forced to learn proper braking technique. But tragically, many people that do lean on non-ABS bikes run into situations where ABS or experience could have saved them from a crash, but with neither available, they had to deal with the consequences.
First off, when you are in an emergency braking situation, riders tend to panic. When you panic, there is no time to think. Your braking technique is built into muscle memory which you've fine tuned with experience. This leads to 2 rider scenarios.
1) If you are experienced, you have probably practised braking in these conditions before, and you've done it enough to quickly and gradually apply break near to the point a tire will lock. And if you're really good, the tire may lock but you'd be experienced enough to let off the brake a bit and save it.
2) New riders, or experienced ones that have not practised enough will do one of 2 things.
A) They will panic, lay on too much brake, lock a tire (disastrous if it's the front) and go for a slide.
B) Apply too little brake for fear of locking a tire (don't know where the limit is) and slam into the object they were trying to avoid hitting.
In scenario 2, ABS could have helped in both situations. In A, it would have coped with the rider panicking and prevented the tire from locking. In B, it would have allowed the rider to brake with enough confidence that they may have avoided hitting that object.
From this we have established that ABS is more useful to new riders than no ABS. Especially if you find yourself getting caught in the rain a lot.
Remember how I mentioned even experienced riders screw up their braking? This happens when riders are afraid to push their limits during regular riding, and haven't put enough time into parking lot drills in various driving conditions. Like mentioned before, this can cause them to brake too much or too little during an emergency situation because their muscle memory isn't used to finding the limit of the bike. This is where ABS can safely help a rider improve at a rapid pace without needing to worry about the consequences of locking a tire. Go practice in the rain: Aggressively, but gradually, apply brake until the ABS kicks in, then lay off until the ABS stops, and try to brake at the limit where the ABS doesn't engage. You just did the same thing someone without ABS would do (Scenario 1), except you could practice threshold braking without worrying about locking the tires. Keep doing this until you build confidence in finding the limits at different speeds, in different conditions (like the wet).
A good practice I like to do in my car (especially in snow or rain) is brake aggressively with no traffic around me and feel when the ABS comes on. First I try to predict where the tires will begin locking based on what the road looks like, and then I see what the ABS does. Then I have a good idea of how much grip I actually have and drive accordingly. It's a tool that can only help you drive better IMO. Know your traction limitations, and brake within them, and you'll never be someone who depends on it to be a good rider. But if you do need it, it will always be there to lend a hand.
And for those that say you can out brake an ABS system. Yea, you can, but not by much, and only if you have a very good idea of the traction you have with the road. Throw in a panic situation where you may not be completely sure where the tire will break free, and I say good luck beating it on a consistent basis. As for ABS failing. From my research, the whole braking system is far more likely to break overall before the ABS system does. And besides, you'll only be like any other rider without it if you practice proper braking technique despite the fact you know you have ABS.
If you happen to dispute a general fact I wrote, please respond with a link to a research paper. Everyone has opinions, but I like facts to back them up. I just paraphrased what I've learned through research and was too lazy to find good sources to list here.
Hey moderators..i feel like this thread has a lot of semi off topic discussion. Perhaps we could move the relivent ABS bits to a ABS VS Non-ABS thread to keep this one clean