I'm a very auditory person. I pay a LOT of attention to my sound-surroundings and get a a lot of cues from them. For example, whenever I play world of warcraft in a group with other people of the same class (warlock) I have to pay VERY close attention to my game, because I will hear the casting sounds from the other warlocks and my timing will get thrown all off. Anyway.
When I ride a bicycle (which I still like doing), I get a lot of information about where I am wrt traffic from road noise. I know when cars are behind me because I can hear them.
Then I read about how you should probably wear earplugs when you ride a motorcycle and thought, "gah! not for me!" But it's probably true. With my current setup (mid-height screen, 3/4 helmet with a bubbleface), whenever I break 45 MPH it gets pretty loud in my head. Worse, I get some higher-frequency noise that's nearly the same pitch as a police siren, so it sounds like there's a police chase going on behind me in the distance (it's quiet and intermittent, but there). I expect that the noise will go down when I get my FF helmet, but it'll just be closed out - I won't necessarily be able to hear anything.
So, my discussion question for the day is: how much information about your surroundings do you gain by listening, personally? Should I just go and mute everything and live with the fact that I will only be able to hear horns? Should I take advantage of it and use in-ear headphones and listen to some tunes while I ride? Is there some magic solution I don't know about?