I travel a lot for work and LA/OC is consistently the only city where I bother to get a rental car. Most places I'd want to go are far away from each other and public transit is often stigmatized and underdeveloped. I went to high school in orange county and the public bus took about an hour and a half to go about 10 miles. I live in San Francisco and gave my car to my family after a year or so of rarely driving it. Two years later and I can't really justify purchasing another.