I've seen many people who are arguing against religion and God and such use the argument that religion forces you to abandon logic. They say that believing in God or a god is simply throwing logic to the wind. However, I would like to challenge that, at least in the case of Christianity, and I might be able to for Judaism as well. In those faiths one is told to believe in God and to love him. Sure, I don't have any physical evidence right now that God exists, however people are told to believe in God because of what he has done (or supposedly done). And some people have witnessed things that would be explained only as God's doing.
So, yes people are taught to use faith and to believe, but they are told to believe something because of past evidence. Is that not what science is based off of? Evidence?
Right now you might not have evidence of God, but some people do, so their 'leap of faith' isn't really much of a leap because it's based on evidence. Just thought I'd try to get rid of that argument.