Why should my feet be attached to the pedals?

[Veronica]

Another good reason is that your feet don't slip off the pedals when it's wet, when you're making a lot of effort going up a hill, etc. That was the original reason I switched, because I ride through the winter here, in the rain, and my feet would slip going up a particularly tough and traffic-ridden hill, and it scared the crap out of me.

Now that's a good reason.

Veronica