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.

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

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

Are Indian youths conservative or liberal?

A belief in a god is not the problem.

THE BIBLE IS THE PROBLEM!

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

Ananda Lewis, Celebrated MTV VJ, Dead at 52 - Rolling Stone

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

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

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?

Have your parents ever walked in on you?

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

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

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

Why is going on a date today so much different than it was when I was young?

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