I believe no law has been broken if no one was damaged
That is an interesting way of seeing it! Although, at least in my case, there would be no law broken by my going through a red light (I didn't hit anyone, and it was in the middle of the night, so no other car was inconvenienced at all!). This would lead to the idea that you could just run red lights as long as you could get away with it, until the moment that you hit someone? In that scenario wouldn't it be better to have the rule, before the accident instead of applying it retrospectively after the accident?
...but agreed, I'm sure there are more than enough laws that have long outlived their usefulness!