I agree with some of the above posts that there is no convincing anyone. This has been discussed before except the discussion was radios.
But to say "what about electric cars" or "so deaf people shouldn't bike" is a shallow argument. 99% of the cars on the road are still internal combustion. I'd bet that deaf person would give anything to have that extra tool to keep him safer while bicycling.
The way I look at it is it is dangerous out there. You need every tool at your disposal to keep you safe. Helmet, bright clothing, reflectors at night, mirrors, your ears, your eyes and your brain. If you are willing to trade one of those tools for a little comfort or pleasure then that's your choice.
But I guess I am just beating a dead horse.