Because most people, in both work and personal life, have expressed and still express their view through evaluations, judgments, accusations, and categorization, answering the questions “what is this?” and “what is it like?”:
- “this is how it works”;
- “this is ugly”;
- “you cannot do it like that”;
- etc.

But no one knows the truth + everyone sees the world in their own way.

That is why we can only speak from the position of personal opinion, answering the questions “what is this for me right now?” and “what is it like for me right now?”:
- “this is not for me”;
- “I perceive it as …”;
- “this feels nice / unpleasant to me”;
- etc.