LUCKY MOVING interview questions

Asked way too many personal questions: 90% of the questions was about my personal life and habits. Only 10% of the questions were about my skills and experience. A lot of questions asked were very inappropriate, showed me little to no basic respect as well as being very judgmental. They told me I am useless and I am someone that is an extremely slow learner, despite me having a lot of skills on my resume(from how he responds, I don't think he read my resume). Also, how can he tell I'm a slow learner from just 1 interview? I told him the reason I wanted to leave my previous company was because the increase of workload and the decrease in employees in there. He asked me how much products come in daily. I told him not a lot. Then he automatically told me "Then you do not have excessive workload". The thing is, workload isn't completely determined by how much products coming in. You can't just make such assumptions. Especially in my case, I was doing the job of multiple departments, which was the reason I was busy. For the lack of respect he was showing me, I should of walked out of the interview.