Ugh.. I'm sorry to say this, but the point you're making is as irritating as one made by someone I had an argument with a while back with. It's actually the same point.
He said that saying mean things towards someone like "get a job you lazy ass!," or something like that would work in a positive way, so to speak. He said it could have a positive effect, but here's the deal bro:
You say as with your brother, he lost weight, and I do believe it was partly because of your behaviour towards him, but what really is it that has happened?
I'm prone to think that you and the guy I was having an argument with are about as sensible/tactful as walls are.
What I'm trying to say here is: for something like this to even "work" you would need a kind of relationship that allowed such inconsiderate behaviour to begin with, brothers being such a pitiful excuse nowadays, family overall I would say, even "friends".
You can't possibly think that you can go around and say that to a stranger, do you? I say you risk a punch to the face, a reply of equally inconsiderate nature or hurting the feelings of this person, which seemingly isn't a problem for you, nor the guy I was talking to. Edit: I take what I said about your common sense back, you seem to know the boundaries better than I had expected, atta boy! How could change out of something like that even be something, and let me use a rather popular word for this, "positive"?
I'd also like to point out another thing; even if you're brothers, do you think you know your brother well enough to say what's on his mind? To say whether he was or wasn't hurt by what you said? Did you ask him even or does that not matter to you? Or do you actually know that something like what you said to him is considered to be a mean thing to say, and said it anyway? Exactly what kind of relationship would that give?
Look, see here; I'm kind of reprimanding you, but not as much you as I am every person who thinks like this.
Now, let me address the main question: is it necessary to keep the balance?
What balance a you referring to?