It may not matter to you, but many people would find it offensive to have themselves confirmed a member of a church they heartily disagree with after their dead (and their loved ones may well too). Of course, I don’t personally think it does me any damage, but so what? It’s not you or my personal feelings on having this done that matters. What matters is that apparently many Catholics do not want their names added to the Mormon Church after they die. Those wishes should be respected.
If the Catholic Church starts adding dead people to their rolls, I will take issue with them as well.
susie
And as I've already stated, many people would find it offensive to have 'last rites' administered by a priest from a church they heartily disagree with. From an ethical perspective, I see no difference between the two actions.