Atheists anger doesn't prove that we're selfish, or joyless, or miserable. It shows that we have compassion, and a sense of justice. We're angry because we see terrible harm all around us, and we feel desperately motivated to stop it.
Religion is a belief in invisible beings, inaudible voices, intangible entities, undetectable forces, and events and judgments that happen after we die. It therefore has no reality check. And it is therefore uniquely armored against criticism, questioning, and self-correction. It is uniquely armored against anything that might stop it from spinning into extreme absurdity, extreme denial of reality… and extreme, grotesque immorality.
If you don't think you're close-minded for not believing in Zeus, then please don't accuse atheists of being close-minded for not believing in your god.
Reality is a harsh mistress. She demands our honesty. She demands our work. She demands that we give up comforts, that we let ourselves feel pain, that we accept how small we are and how little control we have over our lives. And she demands that we make her our top priority. But she is more beautiful, and more powerful, and more surprising, and more fascinating, and more endlessly rewarding, than anything we could ever make up about her.
We need to care about reality more than we care about what we want to be true about it.
Belonging to the Catholic Church gives your support to an organization that conceals and protects child rapists. Again, not as a few isolated incidents, but as a massive, institution-wide culture, a matter of policy even, that extends throughout the organization and reaches all the way to the top. Belonging to the Catholic Church - giving them money, letting them count you in their rolls, sending your children to their schools - gives this behavior your personal thumbs-up, and actively enables it to continue.
Religion is a belief in supernatural entities or forces that have an effect on the natural world - A belief in forces that are invisible, intangible, inaudible and otherwise undetectable by any natural means.