Fasting IS a spiritual placebo, but so are all the other spiritual practices, including meditation. And you're right, no one NEEDS to abuse their bodies for a more focused spirituality.

None of these practices are necessary, but that doesn't mean they don't help. If a kid gets a new bike and just knows how to ride it right away, then that's great--and possible.

But many kids need training wheels first. Then, they take the training wheels off once they've got the hang of it.