Joe: "But in most situations of moral choice, people of good will will agree, and will usually choose the same thing."

This is an interesting though Joe. In the USA a Gallup poll indicated that 61% of people supported the Death Penalty.

Gallup Poll

In the UK in a poll earlier this year the figure was 48% and would seem to be falling

UK Figure

Given that the chice of a Death Penalty is very much a "Moral Choice" here we have a situation were "people of goodwill" are opting for two very different and very stark options.