My girl work for Virgin so we have basically free flights to LA anytime we want to go and have been to Vegas about 15 times in the last three years. I fucking LOVE Las Vegas, I could easily pick up and go move there. It really is like Disneyland for adults.
Los Angeles is a shithole to me - and people are fucking rude and horrible. You Americans have to be easily the most cool, friendly, polite and hospitable people on Earth WITH LA being the major exception. In fact, one of the reason we have been to Las Vegas so many times is to avoid Los Angeles on the way in and out of the country - we need to be close to the airport to fly home but don't want to stay even a day in LA if we don't have to so we hide in Vegas as it is next door.