Ever since there have been a few news stories about ipod joggers getting hurt, all of the "hardcore runners" have been up in arms about how reckless it is. You know that they're thrilled that they actually have some grounds to back up their irrational, emotional claims that ipods have no place in the world of running.
Honestly, it's pretty easy to be aware of your surroundings without the use of your ears. I've also seen plenty of people who are a menace, even without music.
Oh wait, I forgot that listening to music makes it impossible to pay attention to your body. The Killers are just so catchy that I completely forget what my legs are doing and I start running 4:45 pace when I meant to go 7:15. It's so hard to monitor your exertion with the distraction of music. Actually, any distraction makes good running impossible. That's why I do all of my races on the track at midnight, after the meet is over. Nobody has seen any of my PRs, but at least there aren't any distracting fans.
And something else I forgot about: if you listen to music while running, it means that you are a complete pussy and you can't possibly run without music. It's the same reason that I have no music at my parties either. I figure that if people NEED music to have a good time, then they're not really enjoying the good conversation.
In fact, if you need any help getting out the door, at any point in your life, you're not a real runner. All of my 100 miles/week are the most joyous experiences of my life. It's profane to pollute those moments with music. When I need to do 12 miles at 5am, the morning after a hard interval workout, I just bounce out of bed, unable to contain my excitement.
Seriously, you guys can worry all you want about not doing things that make running easier. I'll keep taking my ipod on my easy, solo runs, and when I crush you on the track, you can console yourself with the knowledge that I'm a pussy who likes to listen to music while I train. Good for you.