Since that thread is still available, why don't you link or quote some of these atheists who said you "only come to believe something based upon evidence?"
It would be helpful to see what they said exactly and the context they said it in.
Due to their a priori commitment to atheism, its adherents are unable to escape what Einstein called, 'naive realism', and what has become known, not as 'science' , but as 'scientism' , i.e. the belief that science can explain everything. It is actually a fundamentalist kind of religious belief, totally impervious to evidence, although the evidence against it is now overwhelming. As a result, quantum physics, the most sucessful paradigm in the history of science, verified again and again by new experiments, and upon which 70% of industry now depends, makes a nonsense of your question, which belongs to the scientism that the old classical mechanistic paradigm seems to have encourage in them.
'The bizarre nature of reality as laid out by quantum theory has survived another test, with scientists performing a famous experiment and proving that reality does not exist until it is measured.'
... from thearticle linked below:
http://www.sciencedaily.com/releases/2015/05/150527103110.htm
Furthermore, there is evidence that everyone KNOWS intuitively that God exists, since an experiment was conducted in which atheists were asked to curse God, but which, however, caused them to perspire; evidently from the stresses produced by fear. I can't guarantee it, but I'll try to find the post on UD with the link to the relevant article.
Here is the link:
http://fixedpointfix.com/daring-god-makes-atheists-sweat/
Also from BA77's same post on UD (I call the putative rationale of their rejection of belief in God, the Argument from Pouting and Petulance):
When Atheists Are Angry at God – 2011
Excerpt: I’ve never been angry at unicorns. It’s unlikely you’ve ever been angry at unicorns either.,, The one social group that takes exception to this rule is atheists. They claim to believe that God does not exist and yet, according to empirical studies, tend to be the people most angry at him.
http://www.firstthings.com/ont.....gry-at-god
Study explores whether atheism is rooted in reason or emotion – Jan. 2015
Excerpt: “A new set of studies in the Journal of Personality and Social Psychology finds that atheists and agnostics report anger toward God either in the past or anger focused on a hypothetical image of what they imagine God must be like. Julie Exline, a psychologist at Case Western Reserve University and the lead author of this recent study, has examined other data on this subject with identical results. Exline explains that her interest was first piqued when an early study of anger toward God revealed a counterintuitive finding: Those who reported no belief in God reported more grudges toward him than believers.”
http://www.uncommondescent.com.....r-emotion/