I was thinking about this subject recently because of my own experience.
When I first realized I had curls (a few weeks after I BC'd) I was so fascinated by them and would not go out unless I felt my curls were fully "popped!" I will admit that I wanted to show off my new texture because for years I had no idea that there were such lovely curls hidden beneath that dry, brittle relaxer.
For me, I guess it was the newness of it all because while I do still love my curls, I now have no qualms about combing them babies out and wearing the fluffy fro look. I feel fortunate because within just a few short months, I've come to accept my natural hair for what it is rather than to bemoan it for what it is not.
Honestly, I think that natural hair means a lot of different things to different women and understandably, we all want to look good. I think the obsession with curly hair is a throw back to the "good hair vs bad hair" mentality that is still deeply ingrained in many of us. It's really very sad that as a people, we have been made to feel ashamed for the very hair that grows out of our heads.
IDK, maybe I'm just rambling here, but I really don't have any advice for women who are obsessed with obtaining curls. My hair is already curly, but I know that if it wasn't, and someone with curly hair was telling me to accept my hair for what it was, I would not receive their message with a great deal of acceptance.
I know it's easier said than done, but really, I think that women in general would do so much better if we stopped comparing ourselves to one another.