Dating author and hypnotherapist Alex Benzer gives his seven reasons at the Huffington Post why Los Angeles is, he argues, an extraordinarily tough dating town. The high ratio of single men to women is a big determinant, he says, plus other factors:
In places where the sex ratio is low (i.e. excess of women over men), social mores are relaxed, women go out a lot, and everyone has a ball. Where the sex ratio is high (i.e. excess of men), people go out less and attitudes are more conservative. No one knows exactly why this is, but it makes sense....
Last call being 2 am in Los Angeles, most establishments start kicking you out at 1am. So just when things have started to get interesting, the party shuts down. In cities like Berlin, New York, London, Barcelona and Paris, people often start going out at 1am, and the social life is correspondingly more raucous.
Lack of public transport also means that people stay sober enough to drive back home. As a result, the social lubricant effects of alcohol don't operate in the same way as in a city with public transport.
Mathematically stated, less party time + less imbibing of adult beverages = less fun.