Its simple. In today's family law environment, women own everything and men have no legal power within the marriage without her ascent. This asymmetry structurally produces disrespect and disregard for the man. That ubiquity of disrespect in heterosexual relationships produces a cultural shift that expands outside the marriage, into general culture. Notice how fathers were represented on television and fiction before and immediately after Reagan enacted no-fault divorce in 1969 as governor of California.
No-fault divorce - Wikipedia
