ALDI Cashier interview questions

I went and filled out an application at one of their many hiring events. I was told that there was only one position available and that there were around 500 applicants and only 15 interviews. I managed to get an interview, but I felt it was more like an interrogation like others have said. It was only a five or ten minute interview (which I had to drive an hour out of my way for) where he asked me why I wanted this job and what my previous work experience was. Then I was told that there would be a background check. I told him that was fine and he persisted on, asking me if they would find anything if they went a number of years back. I was then asked if I had done any drugs. After I told him no, he looked at me square in the eye and asked, "Are sure you have never done ANYTHING?" I already said no... I never got a call back, but I don't want to work for a place that treats me like a criminal anyway...