I rode to the farmers market yesterday, not because it's "green", but because I got tired of having to park two blocks away and lug the fruits and veggies back to the van. The bike can be locked up right outside the door and it actually takes only ten minutes longer to ride than to drive. So, I point out the easy parking and lack of a $40 a month parking permit.
I suppose I could also point out that I get to have two bike rides every day, instead of waiting for the weekend to ride in a park. The other day one of my coworkers started moaning about how rainy and cold this summer was. I was puzzled by his statement, because I remember lots of hot sunny days - sometimes too hot and sunny. Then it occurred to me: he's almost never outside. He goes from his apartment, to his car, to work, to his car, to the gym, to his car, to his apartment. He even drives the 1/4 mile or so to the nearest shopping center to get lunch. Because I ride a bike to work, I'm outside for at least 30 minutes of every day, so I actually get to see sunlight when it's around. Hard to explain that kind of connection to the natural elements to someone who only goes outside on weekends.