Drolefille, sometimes I feel that the reason why I feel so at ease with my own lack of belief is because I enjoy a lot of inspirational art. There is an organic response that I would probably miss a lot if it were denied me.
Have you noticed how well it works for you?
For me, 'belief' itself is an inspired art form, or (perhaps more specifically) the catalyzing agent of an art form born of inspiration. Really though, as I've said before, I find the term 'suspension of disbelief' more accurate. At least in my case.