Lots of people complain about LA traffic, and that's completely fair. It's a major, sprawling city, so traffic at its worst is never going to exactly be good.
But speaking as an outsider who visits (and rides in) LA occasionally, the one thing I'm constantly envious of is the fact that LA folks can legally lane split. And that driving culture, by and large, is aware of this fact, so a lot of drivers will even scooch out of the way for bikes. Or, at the very least, not actively try to murder you for splitting.