Earlier quoted context omitted.
Please dont tell me my personal experience is false.
You didn't phrase it as a personal experience. You could have just said "not fun for me anymore". Instead, you implied the world has changed, when it could be just you.
Since you believe that there is some sort of global objective "fun" factor, I believe that this would be useful for you. https://www.superteacherworksheets.com/factopinion.html