Heinlein, importance for society, military, officials, public service...

Workers and technical specialists are far more important to society, for without them everyone will fight with sticks and stones. And in peaceful life, most of the goods are not created by the military.
And even more important is the agricultural sector, because without their work most of the time all people will go to search for or grow food for themselves.
And even more important for the modern person are the doctors, because without obstetricians and pediatricians, half of you would simply not have survived childbirth, infancy and childhood diseases.