Its great.... Different nightlife in different neighborhoods for different people (hipsters, yuppies, top 20's music bars etc)
Its not as extensive like say Chicago, NY, or LA, but its still GREAT...
You gotta love to eat in order to live here though... A lot of my social outings involve going to a restaurant with friends and drinking...
A lot of asian girls, of every variety... Some cute black girls, but since most of the black pop is in east bay its hard to find a dope black girl in SF... The white girls here aren't really that attractive compared to socal and a lot of the other major cities in the country... If you want to catch the dime white girl you have to go to the Marina for the "done up" girls... Otherwise, they are pretty average. Overall I feel like the Asian girls have the most variety... A lot of mixed race women of every variety though, which is your best bet.