What are the consequences of believing in our opinions as if they were facts?

Bad if not catastrophic judgments. In order to make good judgments you have to have an accurate picture of the situation.

If for example someone thinks babies automatically go to heaven when they die then a rational believer would take that into account when making decisions that involve evaluating their worth. For example the genocide of the Amalekites in the Bible might not seem so bad after all if you think all the dead babies went to happy-clappy land to have fun forever.

the pinnacle of the IPCC is an engineer who designs rail systems, particularly than somebody who drives trains. If he majored in a mechanical engineering in the previous specializing interior the layout of rail systems, then he might have an extremely solid expertise of thermodynamics. And he could be in a distinctive place to be conscious of the way the granddaddy of all warmth engines, Earth's environment, works.

I agree with you 100%. But realize that a belief is a heart-felt opinion.... one that people assume IS correct. I would also point out that it is the theists who are the ones who say "I believe". It is the atheists who are the ones who say "I know" or "I lack belief". Which of the two is being more honest?

Religion

The creed is more of a mission statement rather than an opinion.

...just sayin.

The consequences of believing our opinions as if they were facts is a really big argument.

I'mright.

all of that depends upon what it is we say we believe in. if we say we believe in God, that simply means that we have found a way to align our beliefs with the facts that God exists and is real. sometimes we believe in facts and that sets on the side of correct belief.

if we say "i think" then that is strictly a matter of our own opinion. but to say " i believe" can mean that we have chosen to agree with facts.

some people inter change "i believe" with "i think" and in that case your hypothesis would be true.

Intellectual dishonesty

Many people know about the Bible but, they do not know the author. Because of that, they make up things that will cause them confusion and to be lost.

Bigotry and a superiority complex seem the most obvious consequences!

there is this mental confusion within us without being conscious of it? Your aware of it you just can't handle it. This world is full of right fighters even if their wrong.