Hmmmm LA or Buffalo. Believe it or not, I'd pick Buffalo.
Besides traffic, you forgot fires, quakes, more and more-violent gangs, air pollution, outrageously priced homes, and everywhere you !@#$ing go, no matter what time of !@#$ing day or night, there are a !@#$ing shitload of people there. I hate hate hate LA, don't even like visiting there on business when I have to.