This is not the place for debate; no attacking people or their beliefs.
Whether or not you are religious, when did you decide? Were you raised in a religious or non-religious household, or did you decide your beliefs as an adult?
I was raised as a Christian Lutheran by my parents, but decided when I was 12 or so that I did not believe in God.
When I was 14 or so, my brother joined a church and talked it up all the time, so I decided to start going to his church to see what all the fuss was about. During my time there I decided it was more cult like than anything, and really turned me off even more. I became very atheist (like I was a missionary) and used to argue against religious people all the time during my high school days. Just ragging on bible thumpers, etc. I was very vocal about it.
I remained an atheist throughout the rest of my teenager years, and well into my 20's. At about age 27 or so. I started to question my atheism and science. I used to believe everything about science, and honestly, a lot of it doesn't make a lot of sense. Most of the theories are really far fetched. The more I learned, the more silly it seemed. I realized at some point, I had just as much faith in science, and it's theories, as religious people did regarding God or the FSM.
Then I realized I had to do some deep reflection on life in general. Take in the evidence of what I had, and make a decision based on what was in my mind and what was in my heart. So I decided to join a church program (at a friends request) which explains God in modern terms and using modern examples. I actually went there to gain ammo to use against the religious (and my friend) and to validate myself as an atheist.
I used to ponder many things as an atheist, such as: Why is society the way it is? (Violent and Self loathing) Why are selfish people more successful in life? (Business men) We all have questions, but when I started understanding spirituality, a lot of the things made sense, and a lot of the questions started being answered.
I think what did it was when the priest was talking about how we have our 5 senses, and our mind to comprehend what our senses give us. In the process we often ignore our spiritual side. Such as consciousness, love vs. selfishness, and etc. I learned what it was. Then I realized as an atheist, I did turn off my spiritual side in my mind. It was there, and always telling me things, but I choose to ignore it. Then I realized I was blinded by stupidity, and my hatred of the religious folks actually was the cause. Once I let go of my hatred and accepted my spiritual side, a side of me awoke to knowledge that wasn't there before. I then realized I had a soul.
Then I realized I was a follower of God, and didn't even realize it. That God is actually the backbone to life, and that everybody has God in them. Hindu's have just as good a chance for Heaven as Christians do. Same with Atheists. Christians have certain stories, and beliefs, but when it comes down to it, it doesn't matter. To accept God is to accept Love... Stop being selfish. That's all you need. It was like suddenly the puzzle pieces came together and my life made sense. It was actually a very humble and a moment in my life I will always remember. It's not often when you have an epiphany.
I have to this day (10 years after the fact) I can look at the world in a very clear light and still see it in such simple ways, and my faith has not wavered at all. Be loving, selfishness is the work of the devil. Look at everything in life as being loving or selfish, and the world will make sense. All of it.