No thoroughly occupied man was ever yet very miserable.
For something to be useful to the spirit is not very valuable to get your covered wagon across the desert. We have adopted that attitude so thoroughly that any American father whose son tells him he wants to write poetry will be embarrassed.
What I read, I read thoroughly and retain almost all of it.
Some theists in evolutionary science acquiesce to these tacit rules and retain a personal faith while accepting a thoroughly naturalistic picture of physical reality.