

The short answer is, it’s what we were taught in school. Like many preferences, it’s shaped by the culture we grow up and live in.
I’m sorry but it doesn’t make sense to me.
Of course not, you were raised and live in a different culture; so, your preferences are different.
Ultimately, the right answer is ISO8601. It’s unambiguous and sorts well on computers. But, I don’t think any culture is teaching that as the primary way to write dates, so we’re stuck with the crappy ways.
No fair! You changed the outcome by measuring it.