I've always been an Atheist. I wasn't raised in a religious home. We never went to church or any other religious activities and my parents always taught me to question things. I guess I was lucky in that way. They also didn't do the whole "Santa Clause" thing with me and my sister, and it didn't ruin Christmas at all. ;) I know that my father is not an Atheist though, I guess I would describe him as a Deist. Not sure about my mother or my grandparents.
I guess I've never really believed in god, but I've tried.
I grew up in the Netherlands, my mom was raised catholic but never believed in god, my dad who came from christian and muslim parents (grandpa had to convert to islam in order to marry grandma but converted back to christianity after they fled to Holland right after the war--they lived in Indonesia, has 'tried on' several religions (though my mom says, the only reason that my dad decided that we were -at one point- jehova's witnesses was to save money on birthday presents). My dad is no longer affiliated with any religion.
I was always free in what I wanted to believe. When I was 14 I was struggling with certain issues and life questions and thought to seek answers through religion. I had talks with the pastor of a local church, I got baptized, went to church summer camp, sang in the choir, distributed flyers, the whole shabam. I even suggested to my family to start praying for dinner (we never did that before) and they were so kind that they went along with it.
I think I spent maybe two years with that church but just I didn't find any answers that helped me in any way, didn't find the bible at all helpful and I couldn't connect with the church members who didn't seem overly interested in understanding their religion. We never talked about the bible or even god. In fact, I found most of them rather un spiritual and close minded. Though they had lots of opinions when I changed my look and went 'hardrock', (I just let my hair down and wore a leather jacket and dr martins, oh noo!) what a joke. I eventually said goodbye to the church and religion.
In hind side, the church summer camps were fun though, lots of partying, only one church service on Sunday for half an hour or so and hardly any talk about god. I appreciate that now, but when I was 14, I did want to talk about god.
My mom was a lapsed Atheist and my dad was a lapsed something I presume. I never went to church, except for weddings, scouting, and to make grandma happy.
I remember when I was 6 in KEYS, afterschool/beforeschool program, I told the boss lady I didn't believe in God. Boy did that cause a shit storm. But the majority of my friends were atheists as well, many were like reform jews or something technically but were really atheists.