If you're not maintaining proper SA (Situational Awareness), life might come get you in unexpected ways.They do sometimes fall into fountains and such.
23 y/o wearing Stereo Earbuds couldn't hear Helicopter falling from the sky, ultimately killing him.
A friend said that Otieno, 23, a student at the College of the Rockies, was out for a walk and was wearing stereo earbuds, so he might not have heard the falling helicopter.
Otieno was hit by the Bell 206 helicopter as it came in low and dragged 10 to 15 metres before being trapped under it when it crashed. Witnesses told CBC News they tried to pull him from the wreckage but efforts to save him failed.
You don't know what might happen when you're out in the world, maintaining SA is paramount to survival, even the weirdest things like Helicopter falling out of the sky might get you.
That's one reason why I don't like wearing ANC (Automatic Noise Cancelling) EarBuds when outside.
Hearing is one of your important senses to maintain situational awareness.

But yeah I see people wearing them while crossing the street all too often. I just have to shake my head. And usually, crosswalks will sound tones as part of the process of lights changing, something that obviously someone wearing headphones would not hear. There's also a different type of lights that were tested in our community, and those use a strobe effect, mostly for hearing impaired.