Actually I cave dive for a living-
I just get frustrated that many cyclists tend to be so focused on being good to the environment and to themselves that they tend to forget that despite their best efforts they do leave a fingerprint-we all do.
Cyclists are not motor vehicles, and should not be on the roads with motorists unless they have the same laws-and they don't. Registration, licenses, bicycle inspections for safety should be required before they are allowed to share the road with those that must pay the extra funds and provide the extra documentation to prove that they have tried to reduce the risks-