Privacy...I put mine in there because I could care less as anyone coming to whistler is more than welcome to drop me a line.
I understand that a person may not want to divulge their name and specific location. Most of us have usernames that do not reveal our real name. That's what I was trying to communicate when I say you don't need to be specific. For example you could just say you were from B.C. That tells me a lot. Your Canadian, it gives me an idea of the climatic conditions you face as a cyclist, etc. As Nathank said it just helps put things in perspective.