I took a look at the Happier Abroad site and went to the pages linked by "debunking christians" and read the introduction he writes. Sounds interesting and I'll probably read through all of what he writes there, to get the flavor of it. I notice that he says he is a pantheist, which is probably close enough to atheist to make no difference to most Christians in the US. But I've never read a site specifically targeted at fundamentalists and evangelicals and I expect to learn some more about life around them from reading, which may prove useful from time to time.
I wish I had advice for you. I was raised Catholic, went through catechism and up to the point of Confirmation, but held short. By then, I had realized it was bunk. The difference is, around Catholics in the west-coast side of the US, telling them that you don't believe in their God is accepted without so much as a whimper. So I didn't have to walk through fire pits to tell people to let me be and, 'goodby, see you later.' More, I had no problem attending Catholic Universities (they take anyone's money) and pursuing theology with them. Their theology courses, from my experience, are absolutely excellent and as professional and educational as religious studies/theology can be at any of the better universities. I didn't even know that my first year theology course teacher was a Catholic nun until near the end of the 2nd semester when I came up after class to ask what she believed (I couldn't tell from the two classes I'd taken from her.) Their coursework I experienced is just that thorough and steadfastly scholarly.
So it's a very different thing for me and I can't offer you much advice from experience. It's always been easy to see that fundamentalism has both feet stuck in Leviticus 19 through 21 and almost certainly never got much past Job, let alone, god forbid, up to Jesus's Sermon on the Mount. Hard for me to figure that out, because it almost seems as though fundamentalists see Jesus as the anti-Christ and if he's seen that way, then who in the heck do they use for their own Jesus if not Matthew's and Luke's?
Anyway, best of luck to you. You probably know better about your own situation than any of us. So trust what you know and be safe.
Jon
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Say what you will about the sweet mystery of unquestioning faith. I consider a capacity for it terrifying. [Kurt Vonnegut, Jr.]