Would you stay with a woman if she looks different with age?

My doctor is gorgeous and slim and his wife is obese, but was beautiful and skinny on their wedding day and they have been together over 30 years and she does not have her own career either, she is a full time house wife with adult kids. I assume he stayed with her because he is Chinese and in Chinese culture you do not divorce unless your being cheated on.
Would you stay with a woman if she looks different with age?
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