Many people who live near airports are not at all interested in airport expansion. I lived in Burbank and watched the airport lose the battle for more gates, a new two level terminal, and jetways. And it wasn't only Burbank. Residents of Studio City, directly in the main takeoff flight path, were against it as well. The opposition is really only environmentally driven in terms of jet noise. Though of course advocates always try to expand their arguments to carbon footprints, etc. The issue was jet noise.