Modern christianity in America is a primary contributor to my sadness.

People who are lucky in life never question their faith, because why would they? That's why Christians are happier. I grew up Christian, but I was not lucky in life. Christianity did fuck all to help me. Actually, I find more peace in my lack of faith now. But everyone is different.

For those who haven’t read it yet, article engages with this explanation and doesn’t come to the same conclusion

I'm not even sure it's Christianity that makes people less sad (I would argue that it isn't). It's the civic community that churches often create that breed purpose & happiness. Churches aren't the only types of communities that do this, but they're by far the most common.

Religion is a symptom of irrational belief and groundless hope.