Why did the narrator find Laura interesting?
In the book, the narrator found Laura interesting because her maternal instincts never seemed to wane despite having had eight children with seven different men. He marveled at Laura's sense of humor, her affection for her children, and her fortitude in the face of adversity. The narrator was also amused that Laura used colorful language with her children, but he noted that her love for her children was evident for all to see.
In due time, the narrator maintained that he was fascinated by the changes Laura went through during each of her pregnancies. On a cyclical basis, her body weathered the necessary biological changes and emerged unscathed from each experience.
I would notice her belly rising for months. Then, I would miss her for a short time. And the next time I saw her, she would be quite flat. And the leavening process would begin again in a few months. To me, this was one of the wonders of the world in which I lived, and I always observed Laura.
As a neighbor, Laura always found time for her young neighbor, the narrator. She gave him plums, mangoes, and sugar-cakes whenever she had some to share. Laura was also cheerful despite her straitened circumstances. The narrator also found Laura an interesting woman because she managed to attract many lovers despite being plump and being the unlucky possessor of "a face like the top of a motor-car battery." In all, the narrator found Laura interesting because she never lost her zest for life despite her difficult circumstances.