I really need some answers! why am i addicted to depression and is this a bad thing?

It isn't a good: Thing because it means you keep yourself feeling perpetually miserable. Some people get used to feeling a particular way. Although it may not feel good to them - it feels familiar ; thus brings a sense of comfort. I would encourage you to decide if you really want to feel bad for the rest of your life or if you want a better quality of life.