Have you ever had a horrible experience in a job?

No, it's not weird at all. It's quite normal. In order for people to be happy and productive, they need to do something fulfilling and have recognition and appreciation for the effort they have put out. Being treated badly, with hostility at the job will over time, beat anyone down. I'm glad you got out of there and are on the road to recovery. Remember what you have learned from the situation and the things you learned about yourself--these lessons are valuable and will help you throughout your entire life.