Thats actually why I argue objectivism as being aligning better with what's possible within the field of ethics. The whole idea is you can only morally do what you want, without intentially removing others freedom, unless they pose a direct threat to your freedom. As a rule of thumb, this actually works exceptionally well.
Murder for example is wrong (morally), by that code of conduct. Traffic laws would be moral because it keeps others from removing your freedom by either not letting you access the road or accidentally killing you by being reckless. It also handles the Hitler argument, whereas some utilitarians my argue what Hitler did was moral.
The whole point of this philosophy is to maximize personal happiness, while minimizing conflict. Data has little to do with it, because respecting one another is the whole point. When you start discussing ethics in terms of "sociatial good" it starts requiring one to know the future. For this reason, I'd argue objectivism, when applied, provides the more useful form of ethics, where one only has to worry about their own happiness, while not intruding (too much), on others.