Absolutely right---there's nothing wrong with a woman taking care of her husband, family, and home. It's sad that nowadays, this is actually a luxury few can even afford as 2 incomes are often necessary just to make ends meet. As a result marriages, children, communities, and society as a whole suffers. If I had advice for newlywed couples, I would say try and live as simply and frugally as possible so you can live on one income because time spent with each other, with your children, and with family/friends in general, is the most precious thing and will give you far more fulfillment than a McMansion or expensive gadgets.
That being said, with spare time, the wife can perhaps start a part-time home-based business to bring in extra cash for investing, rainy day fund, etc.