The bankruptcy of Zheng Yijian tells us how important it is to choose a good partner.

Caesar and Napoleon's wives both cheated. Yue Fei's wife also divorced him. Wang Baoqiang's wife cheated as well. Wang Lihong's wife also left him. Wu Qilong from Little Tigers has also divorced. Pan Yueming and Jia Nailiang have both been cuckolded. Jiao Enjun was also dumped by his wife. Chen Xiao has also divorced. Li Ming has also divorced.
These people are wealthy, famous, and talented. However, in the end, they still couldn't keep their wives.
So, sometimes a woman leaves her husband not necessarily because of money.