? Are you meaning to say that the same tentatively beautiful things always illicit the same 'sensation' type in all people?
No, just that we have managed to learn to apply the word "beauty" to things that cause a similar mental state, just like we learnt to label things "red" or "acid".
> What is hindering you from accepting the existance of multiple perspectives/points of view?
Reality? Our "brain" adapts itself continuously. But it goes either way. It gets desensitized when overstimulated. When using the label "X" for "Y", that didn't carry that label before, you assume that "Y" now gets part of its perceived values from "X". But associations of "X" are equally at risk to take over part of the anterior values of "Y". If you call too many things beautiful, it starts losing its meaning, and possibly numb you to the experience as a consequence. And if the original association of "Y" is visceral enough, chances are that you cannot overrule it, and that the reverse will happen.
Instead of faking smiles in order to pretend happiness, it's better to learn to accept things for what they are, warts and all.
I think the elephant in the room here is the reaction of other people to scars, especially so big and visible. Calling your scar beautiful and making that known is a passive-aggressive, pro-active move to avoid judgement through suppressing socially unacceptable behavior.