I didn't discover UHT milk until I moved to Germany, and went to the supermarket. It seems that every culture has its own grocery taxonomy, so I had to ask an employee where I could find the milk.

She pointed me towards the milk aisle, and I was amazed that none of it was refrigerated. Sure, you can buy fresh milk in Germany, but it seems that UHT is considered more the "standard".

I have to say, I preferred the taste to either American or Japanese milk, and fell in love with the convenience of being able to keep a case of the stuff in my pantry.