If I were discussing philosophy broadly and someone asked "So what is it you believe?" among the last things to come to mind would be "I'm an atheist" because it's relevant only when theism's the topic.
What they say about atheism is like being a non-stamp collector is true. But, in a society of fanatic stamp collectors intent on making their personal problem into a societal problem, that can matter. So, within the right context, "Yes, I'm an atheist" can matter very much. It still doesn't define me in any other context than theism. But, it's important to address the negative images that "atheist" evokes in Christian minds.
When I was a theist, the scariest thing I could imagine is I might ever become an atheist. I was "saved" so hell wasn't scary. I might displease God but could also make amends. But the loss of belief... THAT was terrifying. Backsliding felt like coming close to "falling off the wagon" and if I fell all the way off, that'd be ruination of my life. Atheism was that ruined state, should that ever happen. So I couldn't wrap my mind around "How can anyone possibly willingly be an atheist? What is wrong with those wretched people?!"
The irony is I was miserable myself with the struggle of trying to belief crazy things. The fear/hate of atheism was defensiveness against my own self and what I feared might possibly happen to me.
If you wanted to reach me in my theist years, you'd have had to address my real concerns. Which weren't metaphysics, wasn't the value of science, wasn't if the world were 6000 years old or what-the-fuck-ever age. Even though I had my
Handy Dandy Evolution Refuter ready to go if any evolutionist-atheist wanted to argue that. But a dialogue rather than a battle would have addressed the underlying concerns: identity, belongingness, meaningfulness.
Theists carry on about the science of origins only because they think that's where they derive their identity, belongingness, meaningfulness. They feel if their individual self was not intended then they're just decaying skinbags... "mere animals" stuck inside a "random" universe.
If the secular world has answers to that concern, it needs to make them more clear. Atheists tend to avoid self-disclosure. Instead we look for bad science and bad word choices to skewer. Maybe the theist will learn to reason better, and reason his way out of theism? But, probably not.
It's not really reason alone that informs such choices. Where reason takes us depends a lot on how we value things. Atheists are amazed that a theist can want to be a theist, thinking "But God is a monster!" Theists are amazed that an atheist can want to be an atheist, thinking "But without God existence would be horrible!" What God seems like is an issue of which "facts" are salient to your value-system. There's no dialogue unless we recognize the values underlying the ideas we present as true.
So for a dialogue, you have to say what's valuable in your lives and stop acting like it's a sectarian squabble: "Science is true, your religion is false, so nyeh!" Though I do understand some people enjoy the back and forth regardless that everyone (almost always) walks away still believing what they did before.