That is the utopian picture. Real man is an evolved creature with emotions and at bottom has a tribalistic psych, which is beneficial for the group (s)he belongs to but will lead to conflict with other groups and / or act as a feeding ground for intolerance to certain other groups.
We rise above tribalism by continuously expanding the group we belong to ourselves, although there will always be sub-groups (social circles, family, ...) where the same primitive, almost instinctive, behavior will be triggered also at times.
That is really not the case.
In fact proportionally, in other social species, we see the exact same type of "social" stuff going on. Individuals trying to trick the group for their own benefit, the group punishing those individuals when caught, competition with other groups, protection of territory / hunting grounds (leading to conflict with other groups), hierarchy / mutiny / power struggles,...
Wolves, chimps, gorilla's,... all of them are faced with the same kind of social dilemma's as humans. "Me and / vs the group" as well as "the group and / vs other groups".
I already told you.
Pride, passion, power hunger, intolerance, hate, greed,...
These are all things that underpin the atrocities of the past, the present and, unfortunately, the future.
Humans have the capacity of rational reasoning, yes.
And they are very good at using rational reasoning to find out how stuff works.
However, humans are NOT very good actually using it on a daily basis.
Most of the time, humans don't use it at all (or very limited or just wrong) and they act emotionally instead.
Proper rational reasoning is actually quite hard. You have to be able to keep your emotions and your a priori beliefs out of it.
Humans have tough time in doing that.
Then there's also narcissists, psychopaths and sociopaths who's brains are "miss-wired" and who literally aren't capable of empathic reasoning etc.
Again, there is no need to introduce any kind of undetectable, unfalsifiable, undemonstrable, unverifiable "force" here to explain immoral conduct.
No need at all. Humans are emotional social animals who, despite excellent capacity of rational reasoning, acts emotionally most of the time. Who is subject to evolutionary instinctive psychology like tribalism and the constant balance between what is good for you vs what is good for the group.
This is why I always add "and unfortunately the future".
Because considering the psychological profile of your average human, bad decisions are inevitable.