I just had a revelation. I am currently studying under a yoga master (one of the benefits of living in India I guess), and it just made sense to me why being "nice" is truly a negative thing.
When someone is being nice, it usually means they expect something in return (and thus they are not behaving the way they really are), and that is the source of all misery. You cannot expect another person to reciprocate in a certain way through your actions, and when you do you set yourself up for hurt.
Therefore the only time when someone should be nice is when both the heart and mind are in agreement (when you truly do not expect anything in return). The way I read that is if a person is already behaving in a way that is agreeable to you it is okay to be nice (positive reinforcement). If there is any disagreement between the heart and the mind, you should follow your mind.
When someone is being nice, it usually means they expect something in return (and thus they are not behaving the way they really are), and that is the source of all misery. You cannot expect another person to reciprocate in a certain way through your actions, and when you do you set yourself up for hurt.
Therefore the only time when someone should be nice is when both the heart and mind are in agreement (when you truly do not expect anything in return). The way I read that is if a person is already behaving in a way that is agreeable to you it is okay to be nice (positive reinforcement). If there is any disagreement between the heart and the mind, you should follow your mind.