Not knowing you personally, I can't give you a good answer.
What your saying may be true, false or only true from a certain point of view. The point is, I don't know because I've never met you.
I've never personally met a woman who was in her thirties, still single and not defective in some manner.
Since you believe that at the age of 30, an unmarried woman is magically transformed into a defect, like Cinderella at midnight, I'm not sure that you'll listen to my defective opinions...
Have you considered that not everyone sees the world the way that you do, so they don't make choices based on the motivations you assume they have? Have you considered that there are 9 Enneagram Personality Types and 16 Myers-Briggs Personality Types and each different type of person will react differently in the same situation, will desire different things, handle their problems differently, be motivated by different factors, and probably each have a different outcome in the same situation?
You make these sweeping generalizations and you appear to believe they apply to everyone, no exceptions. You seem to think there is only one personality type in the world.