Bluetooth is yet more proof that human beings are lazy creatures. And we also hate to associate with the people around us.

Over the summer I worked at our local minor league ball park. I constantly saw people walking around with those things in their ears. You're kidding me! You actually need to be sure that you are in constant communication with the world when taking your 7 year old to a ball game!!! Aren't you there to spend quality time with your kid??? (By 'you' I mean them... not you personally)