Chi, I've asked many people about this over several years and it seems that it's not just Costa Rica women who are immature, but rather something that is part of the Latino culture. Part of their attraction to us is their "girly" flirtation and fantasy-land view on life. I've asked. "When do they grow up?" and was told they go from immature teenager to no-non-sense matriach in a very short period of time. Some say that it happens suddenly about the same time they add girth to their ass.
I concur with your views about honor. We gringos believe it is required of us to take a stand if someone challenges our honor or treats us with disrespect. Roy Rogers, Gene Autry and the Gipper taught us this on Saturday morning TV. We view lying to us as an act of disrespect - "What do you think I'm stupid?!?". Many other cultures think our actions are rude and borish. To people in Costa Rica, confrontation appears to be more objectionable than telling a lie. They seem to believe that telling someone a lie is treating them with courtesy and respect for their feelings. And, feelings to Latinos seem to always be more important than honor and truth. In fact they almost view lying as an art form - certainly it's a social grace, but I remember my old aunt begging relatives not to leave and then after they had gone hearing her say, "I thought they would never leave."
I decided that for my business, the natural conflicts were too great to overcome and the rewards too small to be worth enduring. I suspect that others will find the same. Never have I heard so many long-time expats in Costa Rica talk about finding a better place to live as I have in the past year.
The high crime rate in Costa Rica along with, the high cost of living, poor literacy rate, and real estate ownership problems are frequently discussed where I live in Florida. It's widely known that much of what you read about Costa Rica is today a lie. It's no longer a cheap place to live, if you want to live safe and well. It's also become well known among gringas that old guys go to Costa Rica to chase young women - hookers. They know the fishing stories are mostly bullshit. Many ex-pats are now looking at Argentino, Brazil, Mexico, Columbia, and Dominica as places to live and find immature chicas to play with until they "mature" into matriachs.
I doubt Costa Rica will even miss us when we're gone. The Chinese will be there to take our place.