Years ago I was walking around with headphones. A friend saw me walking, and called out. When I didn't answer, she came from behind, then was in my face. She was in hysterics because she got me so good!

That was the very last time I ever restricted my hearing. I always leave one ear free and clear so I can hear, and I do this everywhere, including home.

Just an idea- you can't be careful and vigilant if you can't hear. Stay safe