Have you ever been on the scene of a realy horrible MVA where the vehcile is so twisted that you couldn't believe that it was once a car? And have the pateint literally walk away and without a scratch. Could he be lucky as sin. Usually. But even if I can't see anything wrong with him, I know the the MOI was there to kill him. I want him to go to the hospital, as any good pateint advocate would. When I get ther the Hospital staff may look at this as a BS deal, and it may be. But as an advocate for my patient I might want to show the Doctors exactely what he survived in the hope that if something is wrong wiht the patient, the hospital staff would look at the scene, take it seriouosly, and be able to catch any problems. Some Doctors, in fact, have become used to pictures and like to know what happen to there pateint. This is an extreme case, but others exist as an argument for cameras on scene, not that I advocate it or would be taking pictures when I have patient care to focus on.
On teh other hand, I understand why many companies disallow it. Howevr, consider that all the insider pictures that grace the inside of EMT and other medical tesxtbooks came from somewhere.