Hmmm….. I’m not sure I can accept that either. The correct answer is that there are as many answers/reasons as there are unmarried. Generalization and blanket statements are what are ignorant, not people. But while we are making generalizations here, I’ll give mine.
1. Self-centeredness
2. Financial independence
Without getting too personal, I will accept the self-centeredness reason. I see it better to be self-centered and single vs. self-centered and married. I see my faults and accept them. I do not want anyone else to suffer because of them.