Something that may not necessarily be true (probability is less than half), like religion, sense of purpose, guaranteed justice in the end, yet the human mind is usually adapted to falsely believe it to cope! This is likely due to the need for social conformity and Darwinism! In the past, even if you disagreed with your tribe, you would not want to risk being kicked out! Yes, it's illogical, but it may also be pragmatic, so it should be fine.