You know what I hate? The self-important people that drive while holding a phone to their ear (illegal in my home state of NJ, btw) who THINK that they drive just fine that way (trust me, they DON'T), as well as similar douche-bags who hold a phone to their ear in a store while trying to steer a shopping cart with their elbow and generally being oblivious to their surroundings.
I happen to use a BT quite often.
No, I'm not one of those that wears it at the dinner table (home or out), or when socializing with real people, in person.
However, I do wear it pretty much all day, every day, Monday-Friday. This is because I work as a sales rep and I'm in and out of my car and stores all day, and I work with my hands. Should I happen to receive a call (business or personal), I don't want to get slowed down by holding the phone with one hand while trying to be productive with the other like I see so many assholes do all day.
The other reason is because in addition to having a BT connected to two phones at once (personal and work cells), here is a picture of my work cell phone:
Now, I'm sorry, but I am NOT going to hold that contraption to my head. That would look dumber than any BT headset I could possibly wear.
As I said to a friend of mine the other day, I think overall, people have more of a loathing for LOUD talkers than anything else. Whether they hold a phone to their head or use a BT, THEY are the arrogant douches.
So if anyone sees me wearing my BT anywhere outside my car, and you don't like it, you have my blessing to fornicate with your maternal ascendant.