Because I haven’t.
When people get engaged after just meeting each other, or decide to move to a city after spending a few hours or a few days there, I just shake my head.
As a chronically indecisive overthinker, I cannot truly understand that kind of certainty.
I can’t think of any decision I’ve ever made that I was 100% sure about, from choosing a job to choosing a house to rent, from getting married to going travelling for an extended time.
Sometimes I think it must be nice to ‘just know’.