The postmodernist idea of redefining everything (like gender roles or relationships) through the lens of personal freedom/happiness, etc might be great for individuals but like any problem, political or otherwise, we have to consider society as a whole across generations. Something might be better for individual humans but much worse for humans at the societal and/or multi-generational level. This is something we are really bad at thinking about and so many changes under way right now are great on the face of it but spell disaster long term.
The trend of ignoring the influence of biology on personal satisfaction is one example of this. There is a trend right now of acting like we are "beyond biology" but the truth is we are inexorably tied to our biological natures. The result of this is scores of people in 20 years saying things like "I am doing what we all agreed is our new freedom to do yet I am miserable. Why can't I just be happy?"