people feel what they do based on how they are treated.

If my neighbor is struggling financially would it be objectively moral to offer him some money? There's a chance this neighbor would be very happy about that and it would make him feel great, but some people might see that as insulting. He might feel threatened or belittled by your charity. Or offering money might make him feel deeply depressed, feeling like he is not only a failure but a burden on innocent people.

People feel how they do based on their own internal narratives of events. Events themselves are neutral, it is our mind that gives them meaning, good or bad, moral or immoral. It's not as simple as treating people "right" because your right might be different from their right.

Also another problem with your statement is that a lot of times people's emotions are random or can be based off of brain chemistry. Someone with bipolar disorder doesn't feel happy or sad based on how they are treated, or even necessarily on their internal narrative of events. In fact their brain chemistry alters their moods and can affect how their brains color their perceptions.

It's human nature to want to simplify things, turn them into easy shapes that fit neatly in their proper spot, but that's not how it works and unfortunately you've created your own oversimplified version of things that helps you live in the illusion that you have things figured out.