>>510162506
If you look at graphs involving happiness, IQ, physical health, fertility, mental illnesses, and other issues you will see a ball start rolling between the 1970s and 1980 until everything went to complete shit by the 2000s.
There's lots of speculation as to what happened but since it's nationwide and affects all races, genders, and ethnicities (even da joos), it pretty much has to be something systemic.
My personal theories are pesticides, food additives, and western pharmaceuticals like birth control.