I have poor memories about my first head/earphones but i supose that was when the MP3 were fashionable, i think i use the head almost every day even a few minutes.
I like because the person or people who think and create the object filled a need, and not all but almost every kind of head/hearphones are cheaper, is not a luxury. i wont say that i can´t live whitout head/earphones but the people probably would play their music for all the people, walking a long time could be boring, and i don´t have more argues, this is probably the most boring object that you have read it about in all the blogs. take care :D 