1) People like things they see as "free". Very few bother to analyze cost vs. benefit if they see no cost. The cost of increased premiums are hidden from them if the employer pays all or most of the premium.
2) Many young women in America today really do think the government is their partner. They have abandoned or been abandoned by parental and spouse relationships. Thus, "Uncle Sugar" becomes their only constant life-partner.
This is sad and will end badly.