Why does it matter so much to atheists that God doesn't exist?

A belief in a god is not the problem.

These are man made rules - made thousands of years ago for the use of the humans who lived thousands of years ago.

THE BIBLE IS THE PROBLEM!

According to the prediction of Mr. Huang, the founder of Nvidia, humanoid AI robots will flood all over the world in the future, so will there be many robots on the earth while there will be fewer and fewer humans?

I do not personally care if you believe in a god or not.

Notice that I said their rules, not any gods rules.

The people of the modern world have evolved past all of that nonsense.

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And then use and ENJOY these fantastic scientific advancements every single day of your life?

My problem is that people who try to shove their rules down everyone's throats - including by physical force - DO EXIST .

IT does not matter, mainly because it does not exist.

How can I promote my Amazon products to get more sales?

And how do you deny hundreds of years of advancement in all fields of science?

Because these are not any gods rules we are talking about.

I am speaking to the US Bible thumpers here, of course ~ many of whom are flat-earthers who deny evolution and see scientists as evil people who are constantly trying, and succeeding, in disproving their beliefs one by one.

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Those rules that you are trying to reinstate are rules made by men who didn't know anything about the earth, nor anything about all of the other inhabitants of it. How can you not see that?