Let's say for the sake of making a point that I was having a debate with someone who believed the earth was flat. Yes, there is a considerable amount of people on earth that subscribe to this idea, still today. Let me ask you, What is more effective? To insult, to ridicule, or to ask to see the edge, the place where the world ends?
Granted that example might be a little too easy, but it drives my point home without insulting, and that is the key element here, the ones who think that I mistakenly believe the world to be round. Now, does this mean I will effectively convince everyone of my stance? Of course not, but there will those times were the other person will concede to some of my points, and others when they actually agree.
I do have to ask myself what would be the purpose on engaging in debate with someone, if that person is determined to do so only for an ego boost. Meaning that I can recognize I will be the excuse for that person performing some sort of self affirmation. The old "Im right, because you are wrong" banality.
Now of course, this does not mean I don't want to discuss an issue, or voice my opinion just because I fear disagreement, no. This just means that I must be aware for my own sanity, really, if I'm about to partake on an action of futility.
Just think about this, you just read a whole post about couches, with a picture of a couch. Yet, there was nothing about furniture here, not even the mention of a store. So what just happened? Did you just get mentally incepted?
I guess, we will never know...