Although I was raised without any religion at all, I went through an earnest (but in retrospect hilarious) nine month period of piety at age 11. I read the New Testament for 30 minutes every night before bed, went to church every Sunday by myself, and spent an entire Easter Sunday on my knees praying. Older people from my church would come over to discuss God and pay visits of Christian fellowship. This weirded my mother out. I have one especially strong photograph-like memory of bursting in tears when they came over one day with yellow flowers. I was very sensitive at 11. But that was a long time ago.
Aside from that short phase, I've never* had any attraction to religious belief. It just seems so bizarre to me that otherwise intelligent people can believe there is a man in the sky who controls things. And this leads them to kill each other, wake up early on Sunday mornings, wear funny necklaces, talk to themselves, and not do fun things like have sex and eat certain delicious foods.
So I was interested in this second research article that links things-I-disagree-with and low intelligence:
Average intelligence predicts atheism rates across 137 nations. Of course, you will take issue with the methodology, and I am personally amazed that countries can have an average IQ, but please read the whole thing before you lodge a complaint.
*except for one week I spent at an ashram when I was 18. Or it was supposed to be one week. After 3 days I couldn't stop crying hysterically and had to leave. This might make you think that I cry a lot (which is true, or (now that I'm thinking about it) used to be true. I stopped my crying habit a few months ago, unintentionally.) but really I think it was the sleep deprivation and weird food combined with endless hours of chanting (chanting turns out to be exhausting). Another funny consequence of that visit: you were supposed to repeat a mantra ("om nama shaviyah") to yourself constantly when you were there. I must have said it 1000s of times in those three days. For the next few years, I would sometimes wake up and find myself saying it in my sleep.