All that you said won't change that feels DO NOT overcome facts, NEVER. And it's better to destroy their self-confidence than to give them hope which is far more cruel.
Crushing a human being's hope is one of the most cruel things you can do to them. You can think what you want, but don't go expecting anyone to agree with you unless they're equally as damaged beyond repair as you. Your entire philosophy is wrong and dangerous, and you need to stop now. I can only hope you aren't an influence in any children's lives.
The real way to disarm someone is to take away his hope (X-Panda - Denial)
Hence why there's something of a cliché in mapping that hope (at least when held by the good guys / protagonists) is the last thing that dies. Source: am a mapper myself, and also watched many mappers much better than myself. And honestly, that's the one mapping cliché that should be applied more in real life than it should in any kind of entertainment media.