Is there proof of god?
This is a question I asked my group leader at my Nazarene University. He is a graduate student in Theology trying to become a preacher like his father is. He was one of my favorite people to talk to about religion because he actually had an understanding of the bible and still believed in it. I would like to mention that this is not a way of bashing him, but it is a way for me to share my experience at a religious university that others might not have.
When I asked him if there was any proof of god, he brought up the typical philosophical arguments for the existence of god: Cosmological (Everything except for god needs a cause) and Teleological (The universe shows evidence of design such as the eyeball). Since I understood that these are very weak claims for the existence of god, I brought it up to him after class. The way he explained it away was that it was a "sound argument" and he agreed that some people might use them as a cop-out since they don't have the answer for something.
For me, this was not good enough. Even claiming whatever started the universe as god, it does not make that thing the Christian god. This was a bright neon sign shouting "WE HAVE NO REASON TO BELIEVE WHAT WE DO!" Near the end of our discussion, he made it clear that it was very difficult to prove that there was any god, let alone any specific god.
The lesson I learned from this is that some Christians do not care about proof or evidence or reasons for believing. They see "Faith" as a virtue, and believing something without evidence is an ideal way to live their lives. If you want to get people like this to understand why it is not a virtue, then it would be wise to teach them about other religions. Many people of faith simply do not understand other religions, and if they do, they know very little about them. Getting lots of exposure to other religions will (in theory) allow them to see that beliefs in other gods are kinda funny, and it will allow them to be critical of their own beliefs.