But, there are also atheists like me, who got a neutral upbringing. Sure, i'm still technically a member of the church i was baptized to as a baby, and i did go to a confirmation camp as a kid etc., but religion was not much of an issue of discussion at our family. We followed the main traditions, went to church only if someone died or got married, but didn't practise religion in any form in our daily lives. Participating in the religious rites were more a social issue than an issue of faith. I'm pretty sure my father was a full on atheist, my mom is an Einstein-style agnostic, but i'm not exactly sure because they didn't try to impose their views on me, but rather encouraged me to make up my own mind. Both made their careers in studying genetics, evolution biology.
Long story short, i'm not fighting against my childhood doctrination, i'm vocal simply because i thing religions are not true, no God, gods or other supernatural entities exist, and faith is a harmful and even dangerous trait. Teaching people that believing something without any evidence is a good thing is simply evil in my opinion. I'm also strongly against religious doctrination in childhood, even if it didn't apply to me. I dislike the fact that people, especially children are taught lies. Teaching religions should be a part of teaching history of mankind, nothing more.