Steel rusts. You can slow it down but it still rusts. Paint ages,allor corodes.
Carbon fibre degrades in UV.
Not everyone wants,can be bothered, or has the space or acess to water drains to clean their bike as frequently as they should.
Some bikes are used for night shifts when it inconvient to clean after it had a soaking,or the noise will wake people up. I have left bikes for days when I have got back at midnight from work and have a morning shift following day.
Also not every one can keep their bike out of the rain where they store it.
Some people have poor skin and try to keep hands clean ie medical staff
Bike maintence is important for saftey and correct running
People make choices....
Last edited by bhkyte; 09-30-13 at 06:51 PM.