Molly had Arthur and that was enough.
Molly loved him, even with all his strange little quirks and very extended family. Everything about him was perfect. His smile was stunning, to her, and his love for her and their family knew no bounds. He was hers for now and forever. He had been with her through thick and thin, from those times when he had to go without food to keep little Bill and Charlie happy; to when he had a promotion and was able to care for all 7 children.
Molly knew not many people agreed with her. They needed the money and status to keep them warm at night, whereas she had her Arthurs love and their misshapen home to look after her. Even the distant cousins and various great aunts made her smile, though it pained her to admit it.
Others did need the sense of money, and some needed sense of power.
But she, Molly Prewett, only ever need Arthur Weasley. And that was enough.