As materialists, liberals want empirical proof that fathers are needed in the home. There actually is proof but they want it to be 100% proof. The same dynamic works in their atheism. More humble previous generations knew things by common sense and experience. Today’s arrogant generation wants things proven beyond a doubt or they won’t believe. As Jesus says:”An evil and adulterous generation seeks a sign.”
Liberals KNOW that a healthy marriage with mom and pop is key to a healthy growing economy and a strong secure nation.
But they also know the way to grow a tyrannical government with ultimate power to the State means DEFEATING the family and replacing dear old dad with a welfare check.
May LBJ rot in hell for the damage he did to the USA.