You've come across as a reasonable person, and there's no reason for me to think you'd be dishonest about this. The thing is, you see the world around you but don't see evidence of God. I see the world around me and it screams of the evidence of God. If it were only about evidence, how could we each come to diametrically opposed beliefs?
This is an interesting question.
But before I lay out my thoughts on that, allow me to address the following post you made in response to Nithavela.
Certainly the effects of God's works were detectable back in day. Unfortunately (?) He doesn't work that way any more. We can, however, see evidence of His work in the millions of transformed lives. The problem, though, is that atheists would not attribute the cause of the transformations to God.
Again I have to ask you to go back to your ideas presented in your original post. There you said:
I think I can understand why atheists are atheists. After all, professing Christians don't love each other as we should. We judge each other too harshly. We get hung up over all kinds of unimportant minutia. To the atheist, Christianity probably just looks like any other kooky cult because we generally don't accurately reflect the nature of our Creator.
So on the one hand we have these "millions of transformed lives"... and on the other hand we have all these "professing Christians", being rather untransformed.
Perhaps this is a good start for your question about the evidence: evidence has to be conclusive and unambiguous to work correctly. "Evidence" that can be interpreted equally for two opposing conclusions, isn't.
Also, and this is a rather important point that you need to understand if you want to understand atheists: usually, and in most cases, all of us interprete "evidence" not exclusively on its own - this isn't possible - but embedded in a wider context. A system of axioms, doctrines. A worldview.
But atheism doesn't do that. Atheism is not a worldview, or a system of axioms. Atheism is not the categorical position of "THERE IS NO GOD".
Atheism, on its very basical level, is simply pointing out that the theist's reasonings and "evidence" are not conclusive without first buying into the the theist's whole other system of axioms.
You said that you "chose" to believe that pink unicorn do not exist. But imagine someone who did... perhaps because he was born into a society that for ages had promoted the idea of the glorious Invisible Pink Unicorn (BBHHH). He would interprete all the "evidence" in Her favour, wouldn't he?
An atheist - an aunicornist - would simply point out that without this existing IPU worldview, this evidence would not be conclusive. And the IPU worldview is not a given, not an unquestionable truth. There are enough competing worldviews that are on exactly the same level.