[watwut]

Lack of empathy is not just inborn trait, it is ideological expectation. Nazi praised lack of empathy (especially in men) and ended up raising people to be like that

And currently, quite a lot of what conservatives see as traditional masculinity is that - you look at what they teach young men and lack of empathy is seen as asset. Compassion is seen as weakness.

But it has zero to do with genetics, it is values.