Rude service from the cashier. I bought some alcoh...

Rude service from the cashier. I bought some alcohol amongst some groceries and she asked to see my id. I'm 33 years old and from Denmark, if someone in Denmark asked for my id other customers would laugh cause it's obvious I'm not 17 or younger. But I show her my drivers license and she says next time bring your passport. For another reason I actually had my passport so I showed her that and asked how old you have to be to buy alcohol, an honest question, but she seemed insulted and says I don't have to act like I'm old enough. I didn't respond to that. She was rude and didn't greet me or anything. It was a crappy experience .. not coming back.