I'm not a Christian anymore, but brought up as one. I was never told what Christianity actually is and meant, and only figured that out later in life. That did help me to not be too annoyed with the annoying parts of Christianity, even when people themselves don't have a clue about what they are saying.

A basic misunderstanding of what is meant by 'thanking God' in a religious context like this, for atheist (and for a lot of theists as well), is the idea that this is an outwards expression, to something out there. For the theists it is supposed to be an inward expression to a feeling/knowledge of yourself. That's the entire idea of baptism, it's the symbolic acknowledgement of having God inside you. And part of the three parts of God (in Christianity), inside, outside, and in other persons. Symbolized by the holy spirit, God as a father and Jesus.

A consequence of being a creation of the almighty God. So, that's 4 Gods to keep track of. Of which 3 of them are the representation of 1, this also hints at the polytheistic beginnings of religion.

I think for most atheists the feelings of annoyance isn't because of these beliefs, as they are in themselves quite logical (in their own right, I didn't mean 'correct' or 'factual'). The annoying part is Christians don't understand their own religion anymore and most of it is infested with fascism.

Anyway, this helps me not hate too much on harmless frases.