the reason they go is to socialize. both men and women prefer to socialize in an environment that's not mostly men. bars were listed as a reason people live in sf. i say it's not, because a sausage fest that closes at 1am is not something people find as a reason to live in a city. the people who do are the people who sit at their weird guy-table in a normal bar full of girls, afraid to walk up and say hello.