Anybody who’s walked and worn headphones at the same time knows that listening to tunes reduces your awarness of what is going on around you.
Sure, I have one, my daughter's OLD one, because we've been upgrading her and I get her hand-me-downs. On Sunday, we celebrate the 10th anniversary of the iPod, the day that Steve Jobs introduced it on stage. It changed the world and since technology continues to move forward, they aren't seen as much. Now we see the more popular iPhone and iPad.