we all have our reasons for commuting, why try to rain on someone else's parade. Some people around here can't afford to make a distinction between saving money by commuting by bike and commuting by bike out of necessity. Just because you can't save money by biking doesn't mean that someone else who is more frugal or more carefull with their equipment can't.
Same idea applies to those people you see driving a 20 year old beat up peice of junk car because thats all they can afford and they make it work.
You should just be glad that you have a choice to make.