Blackwell...I think you are psychic!
You just described all my religious struggles of the past four or five years! If not six or seven.
I've never been able to declare myself an atheist but I think I'm just on the verge of getting there, finally.
One day on the JREF Forum Community board, you might see a thread from me titled "Hey, it's finally happened" with a post text along the lines of "So I had breakfast and then I went to Barnes and Nobles, sat down with a book and I decided that I'm an atheist. It's happened. Just today. Just now. Today over the yukky Starbucks coffee in Barnes and Nobles. I took the plunge. Hello, my now new fellow atheists."
Pretty much the same story with me as well. Brought up Catholic, even seriously considered becoming a priest in my late teens but couldn't get my mind fully around some of the concepts I had to accept as a priest, so I never went through with it. Went through years of self-questioning and exploring until finally I realized that I simply did not, and through the evidence that history and science has presented, could not believe. I declared myself an atheist some years ago.
Which brings me to the OP. Most of my Facebook friends are old college and high school people who are used to me being religious. So when I listed myself as atheist it kind of threw a bunch of my friends for a loop.
I tend to speak my mind, though I try to be polite about it. I don't expect to change minds, I don't want to be disrespectful but I do want my voice heard and understood.
Consequently, I tend to get a lot of "God wants you to know" and "Weekly Bible Verse" on my wall. Admittingly, I find all this a little irksome because there's so many emotionally charged quotes and sayings that if one looks beyond the emotion, the saying makes no sense.
So in response, and this may be pompous of me, every week I put up an "Atheist Quote of the Week", and sometimes I challenge some of the quotes that I find particularly irksome. I try to remain polite and understanding, and to be honest, so do they.
But, honestly, I brought the whole "come out of the closet thing" on myself on Facebook. For example, at the moment I am in one discussion about Evolution with an old friend. When I told him that I know I am not going to convince him and he's not going to convince me, I just like to debate, he responded by saying that he is sure I'm going to "see the light" and convince me that "Evolution is a hoax". -.-