One of my favourite types of films are ones where some form of cataclysm occurs (morbid I know). But one thing I have noticed in many films is the destruction of the city of Los Angeles (sometimes by itself and sometimes as a prominent example). 

Asides from the obvious Battle Los Angeles, there are:

- Massive earthquakes, such as in San Andreas, 2012, the earlier Earthquake film
- Alien attack (asides from the example before), such as in Independence Day and the original War of the Worlds.
- Volcanic eruption: Volcano
- Nuclear War: Miracle Mile, at least one of the Terminator films

just to name a few.

So, it can be seen that the destruction of Los Angeles seems to be a prominent inclusion in many disaster films.  

Is the reason due to the vicinity of Hollywood to Los Angeles or is there another documented reason for this?