Don, to me it's a question of why you're playing Diplomacy. I play Diplomacy because it's a game in which luck does not play a role; in most wargames, simply listing the orders is insufficient to reconstruct what happens, but in Diplomacy, it is. Skill is the determining factor.
When you play a game of Diplomacy well, you are paying close attention to what every power on the board is doing. Might Turkey be eliminated quickly? Yes, but generally in a way that the other powers can see coming and react to. Why is this something that other powers can see coming? Because strong players do watch the the moves, assume that every player is attempting to achieve the most satisfying result they can get, and project how the game will unfold. They have to -- balance of power is critical to a well-played game. And we're attracted to Diplomacy because it's a game in which the player who exhibits the most skill should get the best result.
Where the calculation changes is when a player stops attempting to achieve the most satisfying result possible for them. I don't mean suicides against one of their neighbors - from a situation in which there is no hope of escape, that might indeed be the most satisfying result possible. Rather, I mean situations where a player trades a result in one game for another (we consider that cheating) or stops attempting to achieve anything (CD). These are unpredictable actions outside of the rules of the game. And, in a well-played game, they have wide-ranging ramifications; in a recent game it was correct for me as France to top attacking Germany because Turkey went into CD in 1903.
So, is there a genuine disagreement here? Yes, I think there is. But I think it's a disagreement to a large extent arising from a gap in skill. Players who tend to look only very locally at what's going on see a CD as a random event, usually not really affecting all that much, and from a power who was going to die anyway. And hey, as a weaker player, something that randomly gives a boost to one or two players while hurting the others evens the odds a bit. Stronger players see it as an event that transforms a game that's entirely skill into a game that's a mixture of skill and luck, in a way that means the player who played the most skilled game does not achieve the best result.
So, Don, I certainly respect your opinion. I believe you're honestly expressing your views, and I understand why you've arrived at them. However, I also think that as you improve as a player, you'll start to feel differently. And that anybody on the fence about this might want to ask themselves why stronger players seem to find CDs more unbalancing than weaker ones, and if that might be pointing to something they can improve in their own gameplay.