One point that was not addressed is the sorry feeling one gets when others are wrong and you are right, but for whatever reason you cannot convince them otherwise, and as a consequence they are going to go in a direction that they will severely regret, or would regret if they survived it, entirely foreseeable (sadly).

I have often had to tell myself "I wish they had listened to me." or, not quite "I wish I was wrong", but at least "I regret that I was right." because it led to a situation where someone suffered without objective need for it. Only a jerk would proudly state "Ha, of course I was right, they should have listened to me."