Regarding your comment, it might help to allow yourself to see the bigger picture of what Lewis is trying to say.

For example, when I went to basic training the goal was to get us to function as a team so as to learn to function in the even bigger team that is the U.S. Air Force. It didn’t matter that I was a black guy from Harlem, that Artie was a white guy Louisiana, or that Jimmy Lee was white guy Arkansas, we needed to learn how to function as a team of U.S. Airmen if we wanted to graduate. It wasn’t easy and the cultural similarities lacking quite a bit, but in the end it had to be done. Our willingness to focus on the larger context eliminated the need for the more comfortable similar experiences of race and cultural familiarity one is naturally inclined towards, and allowed us to focus on becoming part of something much bigger than what we were used to. I’m happy to say it worked.

I’m not sure which of Lewis’ works you’ve read, but I find it difficult to believe that you could be referring to “Mere Christianity” seeing as it’s so general in its approach, not to mention a logical tour de force.

Ultimately, the choice is yours, including the choice of calling his arguments unconvincing; however, if you’re going to go through life looking for experiences that mirror your own as some sort of criteria for the basis of their validity, you’re in for some surprises. Blaise Pascal, no slouch in the thinking world by any means, wrote, “Reason’s last step is the recognition that there are an infinite number of things beyond it.”. I ask that you consider this statement.

His arguments for god, however, are unconvincing. Not least because his experience of being an atheist in no way mirrors my own.