Sarah - Don't feel bad about the waves. This is a frequent topic of discussion on biking forums. New riders often feel the need to wave at other bikers because it's new and different for them. After a while, riding just becomes the norm and you don't even think about it. Do you wave at other drivers when in your car? I often nod my head or lift a finger when passing other riders, but not always. Usually I am very focused on my riding, so I don't hit a pothole, rock, stick, or rut. Taking my hands off my bars to wave is not in my best interests for protecting myself. I have seen a lot of cyclists crash over the years by not paying attention and hitting potholes and sticks, bumping tires with another rider, dropping a water bottle, etc. That is why waving is not a high priority for me. Also, I ride 4-6 days a week year-round. It just isn't that unusual for me to see other cyclists.