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

THE BIBLE IS THE PROBLEM!

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

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.

Why won't Canada build their own fighter jet?

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

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

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

Ryu Ga Gotoku Studio's Project Century Gets A Strange New Title - GameSpot

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 .

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?

How can I handle my distrust and jealousy for my partner?

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

A belief in a god is not the problem.

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

Why do siblings (or other close relatives) stop visiting each other as they grow older? Why does this happen with so many people nowadays?

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