[harimau777]

I think you are definitely correct. However, the other side of the coin is that:

In my experience, people who say that they are being harsh for someone's own good are generally just being jerks. On the other hand, people who are actually able to be harsh for someone's own good are generally people who try very hard to be nice.

It's sort of like the saying that luck favors those who don't expect luck.

To be clear: I don't mean to say that I think you are a jerk. I realize that you are just explaining the principle that good and nice are not necessarily the same thing; not saying how you would or wouldn't act in a given situation.