Why does it matter so much to atheists that God doesn't exis...

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?

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

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

Do Europeans typically set heating to higher temperatures in the winter compared to Canadians and Americans if the temperature at a given moment is similar?

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.

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

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

“Not every game is for every single person. Sometimes you have to pick a lane” - The Outer Worlds 2’s director on meaningful role-playing consequence and banning respec - RPG Site

THE BIBLE IS THE PROBLEM!

A belief in a god is not the problem.

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

Is it legal for an employer to ask why you are taking time off from work?

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

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

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

From the Desk of AD Laird Veatch: Mizzou Athletics Embarks on New Era With ‘Will to Win’ - University of Missouri Athletics

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