Making a critical mistake can get you killed but doing anything awesome won't make your lifespan infinite. So, the natural tendency of human brain is to avoid m

Making a critical mistake can get you killed but doing anything awesome won't make your lifespan infinite. So, the natural tendency of human brain is to avoid mistakes for betterment of survival chances while not giving too much importance to any positive stuff happening to them. The downside is too much and the upside is not that much.