Shut the fuck up. I was violently indoctrinated by my abusive christian parents. I know too much about it. I lived with a god in my head for decades. I know no one has good reason to pretend any god exists. It's deadly, selfish delusion every time. It's fear, an inability to say "I don't know". They submit because they are afraid of their violent abuser, and they call it "love". It's stupid. It's point-blank stupid.
I know why people lie. They're scared. But that's not good enough. Their choices are killing us all. It is intolerable. There is no excuse for it.
The hard part is getting them to admit it. They've trapped themselves in circular logic. They're smug about it, proud of their wrong choices. They refuse to apply critical thought because they're selfish, lazy, scared, incapable of facing reality. They need constant pushback from all directions to counter the constant reinforcement of their baseless ideas they give themselves and each other.
I can't deconvert anybody. They have to be confronted with sufficient evidence to trigger a change. Barring that, the least we can do is tell them how wrong they are with hopes it will sink in later.
It should be this simple: all life depends on the truth that defines it. There is only one truth. Falsehoods divide us, threaten all life. There is no evidence, argument, or reason to believe in god's existence. Therefore, it is in everybody's best interests not to pretend there is a god. The alternative is needless suffering and death.
I can't understand why that isn't enough for people. Their shortsighted idiocy is killing us now. We need to do more, faster.