There are some diseases that by the time you don't feel well and show syptoms, it is too late.
A routine annual exam saved my life. I felt fine. Turns out I had cancer.
I am happy that you are well. Truly.
But you have no idea if that test saved you. Maybe a week later you would have felt symptoms. You will never know.
I know we are being manipulated by medical practitioners. We are scared into and guilted into most testing and into taking pharmaceutical drugs.
Again I am happy you are happy. But your story doesn’t prove the necessity of invasive medical tests for the majority of society.