Man, it sounds like your office is a conversational Wild West—an auditory anything goes without regard for those who need some peace and quiet to get things done, and done well.  As workplace walls come tumbling down in favor of more open, collaborative environs, workspace noise has risen along with the assumption that all brains will adapt to the louder landscape.  While it’s true that some are unfazed by and even crave a good buzz, others can’t focus and thrive in the same hive of high volume activity.  The way we’re wired has a huge impact on how we’re affected by the stimuli that you named in your question, and one’s ability to just ignore them is not a legitimate skill on a par with being organized or resourceful.  So, quiet types shouldn’t feel inferior or like buzz-kills because they require a more library-like atmosphere.