Morality wasn't invented, or created. It evolved.
We all have a capacity to make value judgments, and have an acute awareness of other's value judgments of us, as part of an array of biological adaptations (including reciprocal-altruism, empathy, and sympathy) that constitute the human moral sense (or 'faculty', if you will).
In otherwords, we have no choice but to use it. In the same way that we can't avoid using our lungs, we cannot help ourselves but to desire that what we are doing or what we believe is "right" and "good" (e.g., By simply asking the question you asked, you're using your moral faculty, and there's no way to formulate the question, without doing so). Even the most broken of evil people pour an enormous amount of energy into convincing themselves and others that they are morally justified. Hitler had vastly elaborate explanations for why what he was doing was "good".
Only the most rare examples of humans are completely devoid of concern for the rightness of their actions.
Accepting the obligate nature of this faculty, I think it's absolutely essential that we ask ourselves how we are using it? What's the most correct way to use it? What happens when we use it incorrectly? How do we know we're using it correctly or incorrectly?
We've certainly done a lot of fumbling in the dark on these questions in the past, and have fallen prey to a lot of nonsense about it as a result. Including surrendering ourselves to those who offered easy conclusions for these questions.
Let's not do that anymore.