I grew up with a Catholic upbringing. Through time I became an Agnostic. To me, an Atheist is someone who "does not believe in God". My stance is: "I don't know if God exists". The probability I would assign to God's existence is up for debate but I personally think that most people have the same thinking but choose to follow a faith or label themselves as atheists. I feel that it would be nice if God existed as it would raise the possibility of life after death. Feelings associated with "wanting" God to exist can be comforting but have no bearing as to whether God exists.
A lot of religions thrive on the "fear" angle. To put it bluntly, "if you do not believe" you will be judged and end up in hell. There are hundreds of known religions in the world. I personally think that if God indeed exists, god would not judge me for being a muslim, a christian, a buddhist, an atheist etc. I would like to think that God would have a supreme being capable of rationale thought. I personally think it is arrogant any religious teaching to say its their way or hell.
One thing I do feel very strongly about though, is that all religions are "man-made" and are all at least in part factually wrong. Given the lack of evidence on any one of the major religions, I find it irritating when "fundamentalists" try to impose their religions on others or commit acts of terrorism or murder and use their religion as justification.