"And when you fail? Because seems to me like everyone would die."
"Ok and without it well then you're just a coward, you become selfish and a complete asshole. It's not trusting that something will work 100% it's just accepting the chance that it will work as a possibility. That possibility is what makes anything worth trying. But if you'd rather be a selfish coward, watching people die from the side-lines and moving on like it's nothing, fine by me, If you don't mind I have a monster to either kill or die trying."