A great post that clearly explains the problem statement for humanity as it exists.
Step to head would require us to look at solutions. A simple solution that can be proposed would want the people to understand the reason and the science behind existence and the moral thought itself.
Human beings basically are creatures who see with their thought Eyes rather than the physical Eyes which are predominant in animals. This difference needs to be understood to understand and know the logic behind human behaviour and cognition.
Understanding and knowledge is something that only humans have and can appreciate. If the reasoning of the moral cognition is analysed understood then moral action will follow. How the gap in moral cognition vs moral action works and will lead to remorse and suffering is not understood properly.
This is a reality from which no human being can get away is not properly understood.
I have put together a simple PPT which explains The functioning of the human being and the reasoning behind feeling.
https://docs.google.com/presentation/d/1cf--RkAHZAoZf5uucXlhBhNKJSb2UuNyTFwYbS1R0y8/edit?usp=drivesdk remorse and suffering.
Look forward to hearing from you and help to spread this knowledge to more people.