Why is race and nationality ignored so much in the lore? (why does the lore fail)

[Azurymber]

azu
not everyone get addicted to things
or wants to have children.
not everyone cares for gains
and not care what they look like

if people didnt enjoy intercourse and have kids on average humans would no longer be around
everyone gets addicted to things.... thats part of your brain. some people are better at dealing with it than others, but everyone gets addicted.
the AVERAGE person cares for relative gains. this has been scientifically proven in the past 5 years over 50 times across the planet it all different cultures
and the Average person cares what they look like because evolutionarily they subconsciously want to attract people (and at some point reproduce).

Doesn't mean everyone, but it means a very large majority does. And by large majority i mean enough to keep the worlds population growing.