These places have one or both of two things which cause them to think in a backwards manner contrary to science and nature:
1. A dependence on organized religion
and / or
2. A social structure which denigrates the individual and still glorifies marriage, propagation and family heritage in a time of world population explosion
The second view when unaccompanied by the first is common in Chinese and other East Asian cultures.
Wouldn't it be a much nicer world if people could start thinking with their brains and not with their heads up their rears?