1954 and I support it.
Exchange the apartment, if it is shared with your brother, let the young people eat and buy plush mice for their money, and grind the dirt on their own. Living in the same house with people who have fundamentally different approaches to life is a mutual hell.
And there and see how much brother one on one with a loved one will last. Per, only the level of comfort that the sister provides does not allow him to notice the shortcomings of his wife. Or maybe he has found his happiness, and he will be happy, despite the lack of money, empty refrigerator, dirt and noisy dirt. Each his own.