I will admit, this topic came up in our house just the other day and my wife and I both did some major judging.
We heard through the grapevine that our SIL (my wife's brother's new wife) let it slip that she was hoping that her husband would start making a little more income so she could quit work and stay home. They have no kids, have no plans for kids (he's 49 and she's 42),
she just doesn't want to work anymore. 
She's also been trying to convince him to sell the house that he's lived in for 20+ years and move somewhere else, because she doesn't like the neighborhood (
or some BS). We suspect she's hoping that if they buy a different house, she'll get her name on the deed (
despite not having a dime to contribute to a home purchase).