1) Hating the San Fernando Valley
40% or so of Angelenos live in the Valley. More than the population of Philadelphia. If you live in LA and know more than 10 people you probably know someone who lives in the Valley. Sure, it's a newer, sprawl-ier place than a lot of Los Angeles. Sure, it's typically 10 degree (F) hotter than a lot of Los Angeles. Sure, it doesn't have quite the cultural facilities like some other parts of Los Angeles. But let's not get started on the lack of interesting qualities in a lot of places from where you might have moved.