No, facebook is not in any way a "ghetto". If you saw what myspace degenerated to, to warrant the comparison, you wouldn't even begin to try to place that label on facebook.
It's like we've all forgotten who the 800 lb gorilla is! Google's launchpad is tree-mendous. The show is just getting started.
Will people use it? Sure, but I doubt that millions of users will actually leave FB for Google+.