You are not wired to notice when people do things the way they are supposed to.
You also have some intrinsic beliefs around what people “should do” because they are being paid to do a job.
As the owner of a business, or manager in a company, you look for what is wrong. It’s what you’ve been trained to do. It is your job to notice the outliers and fix them.
That is why, the number one reason for employee turnover is you.