Lack of imagination and insight leads to a state of mind called conversion. It is a fix or rigid state of mind filled with prejudices, be that it may, religion, nationality, race, caste, creed or any other cultural dogma.
I believe this is where the cultural instinct get ingrained.
If a particular population is isolated and not exposed to the rest of the world civilizations, and when there are many such isolations, it is easy for many dogmas to spin off independent of the others.
Man’s irresistible urge of migration has brought these dogmas face to face with conflicts. As a result of these conflicts some dogmas disappear and some get established.
This is probably residing in our genome.
Religion is one exit point.
The black and white race is another universal dogma.
Race is another.
All are end points of conversion strategy of mankind.
Any other dogma falls within this frame work.
The existence of god and a creation of an almighty wisdom are byproducts.
Once inside this dogma, science takes a back seat.
Albert Einstein put this succinctly.
Science without religion is lame and religion without science is blind.