I observe human interaction. I can comment when I want to.
You misunderstood my statement. When I said you could 'hide' if you wanted to, I was not implying that you should. I was merely saying that you can choose not to have to have a confrontation with a Bible thumper by simply walking on by or not responding on a forum. As I said, people feel threatened by something or someone different. Your way of looking at religion is different from 80% of the population. By stating, 'I think religion is silly or superstition', that makes you a target of that 80%. In other countries, by not agreeing with the majority religion, you get hanged. Better here, I think.
There is nothing wrong with you or atheism. It's just different. People born with birth defects are also different, but they don't have the luxury to 'hide' in public when the attacks become too much. (and before you say it, no, I am not comparing atheism to a birth defect)
So yes, speak up and state your case. But don't succumb to petty attacks on the other side when logic and facts are your best ammunition.
Hardwiring comes from generations of experience and a little bit of genetics, my best guess.