When using the word "but" in conversation or writing, there is an indication that whatever the person said before "but" is trivialized and thrown away as if it has no value. The only part that a person hears is after the "but". So the "yeah" part is considered meaningless in the statement.
It's a learned skill to have a conversation, disagree with someone, and not give the other person the feeling that you've devalued their opinion. When you use "but" or "however", you're perceptually undercutting the first part of the statement where you may have discussed what you learned from the other person's side of the argument / conversation.
I don't think that you're imposing your own Goddess complex to make yourself feel better. It's just a product of people not understanding how a simple word like "but" can change the whole tone of a sentence and probably a bit of the fact that people want to make themselves feel important by imposing and justifying their views to others.
We all want to be accepted. Some people need to be accepted more than others, and those people are often trying to surround themselves with people who agree with them.
"Yeah, but" is not a positive conversational phrase. It's a "No, you're wrong, and I'm right and I'm going to tell you why." If that's all you're hearing from people around you, you're possibly surrounded by some self-absorbed individuals. Don't let them get you down .. there are better people in this world!
It makes sense.