Earlier quoted context omitted.
Even if the material world didn't require this, it's required by a substantial portion of women, romantically speaking. Many women express their concern that "he never shares his emotions", but when he finally does express his emotions and what truly bothers him she finds herself unusually dry and loses respect for him. Some men never have to learn this the hard way, and they're fortunate. It's common enough that it'…
My experience is that they do not mean it. What they want is for the man to make her feel loved. What they do not want is for the man to express his deepest insecurities and make her feel insecure by proxy because she depends on him.
https://en.m.wikipedia.org/wiki/Transactional_analysis
Personally I've encountered the thing you've described, and think where it went wrong was falling into a persistent parent/child dynamic instead of returning to an adult/adult one. I'm a bit wiser now and can confirm that once you recognise the modes you're falling into, you can shed the (toxic) ideas like "nice guys finish last" and start having deeper relationships.