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

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

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

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

Can a dental anesthesia injection cause nerve damage? After receiving an injection in my gums I felt a sharp tingle going from the gum to my lower lip, and now sometimes I get a bit of itchiness and discomfort in my lower lip. What is it?

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

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

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

Why do men choose to marry a plain Jane woman over a pretty woman?

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

THE BIBLE IS THE PROBLEM!

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.

What are some cool confidence hacks?

A belief in a god is not the problem.

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

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

My landlord just sold the house I’m renting from her. She included all fixtures, that I bought and installed. Does she have this right?

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?