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This isn't true.

Men sincerely love women and will try very, very hard. Often killing themselves in the process.
But there is a time when a man realizes that it isn't worth it. That the juice isn't worth the squeeze.

If he comes home to just get an earful every night, he will stop coming home.

Further, it is usually the woman who leaves. 70% of divorces are filed by women. And, the men, after being dragged through the courts, often still love their wives. While the women are so done with that man.