The problem with telling you is that it helps you fake the evidence. I have to assume that once I tell you, everything you give that looks like that evidence must be assumed to be faked.
Evidence can exist, but human beings are too dishonest to present it. Human beings cannot be trusted - and humanity's history of dishonesty is all the proof I need for that. I will never trust human beings, as a moral compunction.
So no one can tell or show you anything to change your mind? Then we're back to where we started with a philosophical or a moral position rather than a logical one.
Then it's a moral one. It's morally wrong to give human beings an inch - especially when it's practically guaranteed that they use that inch to abuse someone else.
humanity's history of dishonesty is all the proof I need for that.
Also, history books and discussion is more about grand state actors and conquests, not the everyday kindness and selflessness. It's usually the norm, so not noteworthy to history.