Why would you?
I saw a chap, young guy, early 30s maybe, waltzing down Baker Street in no small amount of hurry, briefcase in his left hand.
In his right hand he is yapping away on a slimline modern Nokia. On his left ear is a highly stupid looking bluetooth headset monstrosity.
If you’re going to wear these things, at least have the confidence to use them, PLEASE. You look a lot more of a total arse ‘using’ the phone whilst wearing the ear thing.
Then again perhaps he has two or more phones? Maybe that excuses it.
No. No way. No excuse!