[NYer]

Ping!

[Buckeye McFrog]

My understanding was that certain groups of conservative Jews objected as they found it offensive.

[miss marmelstein]

I’m a pre-Vatican 2 Catholic and never used the Hebrew word for God. It was not said in the Mass, either. Must have come into fashion later...

[Arthur McGowan]

The wide use of the name of God, rather than “God” or “Lord,” stems from the Jerusalem Bible, especially in the Psalms.

It deeply offended many Jews.

[jmaroneps37]

Pope Benedict made a deal with a group of Jews to stop using the word.
Funny story about this:
My parish in Florida still uses it. When I asked about it the Cantor told me, “Oh our piano player is Jewish and HE said it's alright.” I just nodded and walk away laughing.

[TruthInThoughtWordAndDeed]

See my tag line

This is my understanding of the sacred names of the father and of his son

[dangus]

Fairly mediocre answer. The best reason is far simpler: Because it’s wrong.

YHWH isn’t “Yahweh” any more than Kent Hrbek’s name is Homerbek. The fact that it’s impossible to pronounce is precisely the point: The letters were chosen because there is no possible combination of implied phonemes in the Hebrew language; the best you can get is “Yahuwehee,” in which case the speaker sounds like the blooming idiot he is for trying to pronounce a name given precisely because it cannot be pronounced.

[onedoug]

I once listened to an Old Testament course given by Amy-Jill Levine in which she speculated that “Yahweh!” may have been yelled in battle by Hebrews carrying the Ark.

I thought it interesting.