Why are women so comfortable talking about emotions/insecurities?

It's always sort of baffled me as a man because women know how to take advantage of this kind of knowledge more than guys usually do yet they will talk about everything from a yeast infection to a recent story about them thinking hamburgers are made of pork or share an embarrassing story.

As a guy, I always feel like so much effort in my energy every day goes into not accidentally talking about stuff like this.

Why are women so comfortable talking about emotions/insecurities?
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