[baubino]

> But if there is no afterlife, why does building caring and just society matter?

Because some (most?) of us are empathetic and compassionate people. We care about others and hurt when they hurt. We want to live in a just society and want to leave behind a just society for others after us.

The fact that it requires „training your conscience“ to „trample on the lives of others“ suggests that such an outlook is not a default state of being.

[arghpirate]

Most of us are egoistic a-holes, and most of us like to build false picture of them in their minds so we can have nice time thinking that we are good persons.