Music while you Ride?

I am 100% deaf, I have hearing aids that sound like a broken radio, and I found the best way to explain my deafness is that I can´t tell the difference between a bird´s tweet and the squeal of a double decker´s brake.

But the thing with seeing instead of listening, your eyes never lie, (expect when it come to cleverly hidden pothole on rainy dark evening might be different), your ears might, at least mine does a lots more than hearing people, what if a cyclist coming up behind you? you don´t often hear them since they tend to be quiet especially fixed wheel bicycles in a windy day, what if you can´t hear an electric car coming up on your right, left or behind you? etc.

I see that relying on your ears might be more problematic than looking out more often.

Does that affect your balance at all?
Can you cope with speach at all?

Sorry if the questions are personal...I'm just a curious person by nature..