I'm neither believer, nor atheist.
My experience as a person who is searching, though, is this:
Atheists don't care about my "believer" leanings.
I feel more accepted and safer and supported as I search, with the atheists.
I have no issue with the non-atheists, except that on-line, I find they are more militant and persecution complex-y than in real life. The constant arguing over the minutia of words and phrases is so much that the actual point is lost.
When I disagree with or question the atheists, its okay. They encourage me to find the answer.
When I disagree with a believer.......I'm "angry", "lack faith", "not receptive to holy spirit", "afraid", "not trying hard enough to HEAR".....etc. Makes me want to give up.