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

THE BIBLE IS THE PROBLEM!

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

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

Is it possible to run away from home at 16? What are some essential items to bring for survival?

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

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

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.

Have you ever been forced to undress for money just once?

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?

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

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

How do you go about getting invited to an orgy?

A belief in a god is not 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 do not personally care if you believe in a god or not.

If the world was flat, would it be possible to see Mount Everest if it was on the other side of the Earth on a clear sunny day?

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