Christians, please justify this for me

[FreeTony]

How do we know God is good? Because good is a standard of measure based on God.

No it's not. You'd be measuring Godlikeness. You still have to somehow ascertain God is good.

If I followed Gods biblical example I'd be killing thousands of people.

[Jacob(smooth)]

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Oh I am / was! I just found the cognitive dissonance of trying NOT to believe somewhat harder than the cognitive dissonance of believing.

How does not believing in something for which there is insufficient supporting evidence and valid/sound logic cause cognitive dissonance?
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Easy. Try this.
I love my kids. I take delight in all they do and vicarious joy in their joy.

Now I know that I'm genetically programmed to feel that way. I know it's a survival trait for my genetic material that makes me want to do good things for them. I further know that there is no objective reason to derive joy from stuff which pleases them but is bad for them. The contrary in fact.

But I still made them cherry flapjack and knickerbocker glorys last night, and had fun doing it. Sometimes the feelings are more important than the truth behind them

I'm certain that if I kept challenging myself and reminding myself that all the things I think of as real are probably products of my own psyche I could push past that, but why? As people told me there is no payoff.

But there are payoffs;

Intellectual honesty.

Knowing that your internal beliefs most likely map to reality more accurately.

Knowing that you will most likely be making important decisions based on a more accurate internal map.

I could go on...

Please do, cos those payoffs are frankly toilet.