I have posted elsewhere regarding the irresponsibility, recklessness and sheer stupidity of removing one of the two senses most required when riding. And to illustrate the point, just last Tuesday, a cyclist came out of a parking lot, didn't look to see if anyone was on the road and slowly wandered his bike right in front of mine as I was zipping along. He couldn't hear me call out and he couldn't hear my horn, forcing me to brake hard to avoid smashing into the back of him. I could not pass him with cars on my immediate left. As I passed him I let him know just how close he came to a serious incident. He was completely taken aback, unaware of the situation he had just put me (and possible others) in.