>>212512002 (OP)Extreme levels of genetic heterogeneity (makes an unstable, low-trust, caste-based society), religious fundamentalism and inbreeding (makes people weaker and dumber).
It's the starting ingredients for further factors for ruin (Corruption and selfishness in groups, lack of civic sense in people, poorer state of education and discipline, low innovativeness etc.)
These in turn lead to more derivative specific factors to further fuck us up (e.g. low innovativeness and bad education leading to a wall against the creation of more advanced and sophisticated systems without external help or management, lack of civic sense leading to a more polluted and mismanaged environment, lack of common interests and selfishness leeding to lower levels of cooperation between people to improve society).
A population's average intelligence is often a good indicator of it's stability and functionality Sadly all kinds of primary, secondary and tertiary factors have absolutely gutted that for us (inbreeding, pollution, exposure to heavy metals, malnutrition, poor prenatal healthcare).
It's a vicious spiral that keeps on getting worse, and there's literally no silver lining except for the fact that it's not sustainable and soon this overpopulated shithole full of retards and apathetic cunts will implode on itself