A longstanding trend, but something I'm paying increasing attention to, is the idea that the wife is always right. The happiness of the household is contingent on the happiness of the female partner. This does injustice for expectations in relationships, for both the male and female. (One of the fraught cons of heteronormative relationships).
The Jonas Brothers released a song in their new Happiness Begins album called "Love Her," and one line states "No matter the fight you know she's always right." The movie I watched last night, Always Be My Maybe, ends with Marcus willing to adapt his whole life to be with Sasha because she needed someone who understood and could accommodate her jetsetting life.
To me, this perpetuates the trope of women as intolerable, insufferably miserable, and emotionally driven that need to be appeased by their partner. Not only does it lead to entitlement and subtle infantilization, this concept almost suggests there's a lack of agency over our own happiness. To women, I can imagine that the "happy wife, happy life" narrative also paints a shitbrush over men as a whole--that they're unconditionally wrong, which shouldn't be the case. Relationships should be founded on the idea that two adults are compatibly competent and able to make adult decisions and compromises without resorting to traditional gender stereotypes.
I mean, this isn't a thorough analysis as much as an observation and my two-cents, but I think we could do less of this "happy wife, happy life" joking around.