I live in Hastert's district and love to visit San Francisco. Below quote from article probably explains why it's just love to visit.
There is also a class difference. Mr Hastert's district is as resolutely middle-class as it is cheerfully mid-American. A few businessmen live in multi-million-dollar houses, and send their children to private schools. But most people send their children to public schools, shop in giant shopping malls and eat in chain restaurants. The region's varied economy means that you do not need a higher degree to get ahead: people do well in farms and factories as well as in office suites. And the almost universal commitment to the public schools reinforces the sense of equality. Sue Klinkhamer, the mayor of St Charles, points out that her local school district is so big that people living on fairly modest incomes can send their children to the same schools as do millionaires.
San Francisco is both higher- and lower-class. The city is home to some of the richest people in the country, many of them, like the Hearsts, Haases and Crockers, the heirs to rather than the creators of huge fortunes. It also has a disproportionate number of single professionals with big disposable incomes. Yet it is also host to one of the country's biggest concentrations of homeless people. Over 8,000 of them, perhaps twice that number, many drug-addicted or mentally ill, live on the streets. “A mixture of Carmel and Calcutta”, is the verdict of Kevin Starr, California's state librarian, on his native city.