Wow! In my secondary school (in the UK), we didn't have a vending machine, and were only allowed to buy coffee from the cafeteria once we were in our final year. So I never really tried it until I bought a jar of the cheapest, crappiest instant coffee when I started at university (there's a reason I still remember that jar, and it's not a good one).

Nowadays though, it's cortados and flat whites all the way for me. I'm not sure if I'd call myself addicted, but they certainly brighten my day.