Marriage is getting less common.

Marriage rates have basically collapsed among lower SES African Americans in the US and dropped significantly for all other classes as well. In addition to this the number of relationship hours one can expect from a marriage is that the average age of marriage is getting higher and higher for women.. In addition to this divorce rates are high and mostly driven by women, for example:

Evidence is given that among college-educated couples, the percentages of divorces initiated by women is approximately 90%.

Both also speak of a probably lower quality of relationship hours as does a lower satisfaction with marriage than in the past.