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

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.

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

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?

Has anyone ever participated in a gang bang and what was it like?

A belief in a god is not the problem.

THE BIBLE IS THE PROBLEM!

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

Why do people with trauma easily recognize other people with trauma through eye contact?

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.

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

How do I stop someone from forcing/pestering me to become gay/bisexual when I already want to be straight?

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.

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

How do I convince flat earthers that the earth is round?

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