...and naturists can all discuss this? A sacrament reveals an inner reality of spirit, yes? Perhaps nakedness of one sort or another, e.g. emotional, moral is a kind of sacrament or a preparation or necessity for participation in one?

Now call me naive, but I see killing as called sacred all over the world, as a military duty to God. If death-dealing is sacred, then maybe life-giving clothes-shedding is too? So let's not be cloaked by prudishness in discussing a great subject

cf Tad Guzie, The Book of Sacramental Basics