haha don't worry, I feel like that a lot too, and end-up spewing a lot of verbal diarrhea to compensate
I very much agree with them. There's a personal sense of relief when someone is more confident about what they want, and don't want, it helps to remove that feeling of needing to walk around on eggshells worrying and caring doubts about these types of things.
I feel like I can than be more open with the other person about my own wants, which sort of goes with what you mentioned previously about not wanting to come across as selfish or pushy.
Basically, I think it creates a sense of mutual understanding, equalizing the relationship