You won't find hostility here against a claim there's no God or there's no proof of God. You won't be proselytized, either. Frankforum encourages controversy on all topics.
So if you get into an argument with someone, it's likely on the content of the argument, not against you for being an atheist. We all argue with each other here, and even call each other names when we feel like it. HONESTY matters.
FREEDOM is HONEST, and you have the right to believe whatever you want, and anyone else has the right to dispute whatever arguments you make.
That being said, you are WELCOME here.