This happened to my sister in law when she married her husband.
General discontent---which really means that she simply doesn't want to be married anymore, nothing more.
Look at television, magazines, popular culture. Most women in America today despise men; they've been brought up that way. It's all this "I am a woman, worship me" nonsense that's filled their heads for the last thirty years.
Personally, I think that you have to be a fool to bother with women raised in this country. Maybe there is something to be said for immigration.
Many of my friends are telling me that Latino women are absolutely wonderful. They like being women, they like their men being men. One guy I know used to live in Arizona and dated a hispanic woman. Said she was great. He broke up with her because she was a bit more serious than he was, but also said that he would do it again in a heartbeat.