Because to me I have had instances in my life which I accept as proof that my God exists and that Jesus was his son. I used to be just like you my friend demanding that I needed empirical evidence but as my life started changing and I started having things happen I started questioning the things that my senses told me and started to realize, that there is more than meets the eyes in this world/universe
I understand your point of view and I respect it, even though I don't agree with it.
