I have to admit, and I apologize in advance to those who I offend with this, but: I generally find women's conversation to be... dull. Dull and annoying.
Don't get me wrong - there are women I love talking to. My girlfriend, for one, keeps me on my intellectual toes. My sisters, and a few female friends. But when I hear a conversation amongst most women, my eyes tend to glaze over. They yak about clothing, recipes, shopping, and I don't know what all else. I've tuned them out by that point.
Do I have to talk like that in order to pass in public? Will people kind of cue in and say: "She seems... a bit off. She doesn't talk like a girl." Or am I over generalizing and a bit paranoid?