From one angle I disagree with you Jar. It would, in my mind, be unethical to without benefits (especially medical treatments) based on the beliefs of the recipiant. We even force some children to take blood donations against their religious beliefs.
However, from the other side, I think it is hypocritical of these same believers to accept the treatments. If, for example, they are convinced that prayers are behind the medical "miracles" that seem to make the papers rather frequently then it is surprising that there are so few you relay solely on the prayers.
Perhaps there are "no atheists in the foxhole" but I'd say there are
"no true believers in the hospital ward". Neither is true of course, but I'd say the second is more true than the first.
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