Why do I feel so depressed?

I am just going to start from the beginning. I was asked out by this guy he was white and I am black… The majority of his family was well.. racist. In the beginning of our relationship he was talking to other girls and saying that he loved them. I caught him and he said that because we were living together that I was the one he loved. I found some stuff on face book too. I got angry and told him I was deleting it and did. He also had problems with his money. He was a manager and made more money than me and would use it all up and when we went out I was always paying for stuff. I was a cashier part-time. He was just so selfish and seemed like he did not care about my feelings. Sometimes he would come home from work and say to me how attractive some of his co-workers were. And when I asked  him if he did this to any of his old girlfriends who were white he said no. I asked him why and he did not have an answer.  It took him a long time to learn from his mistakes and even longer to say he was sorry. Our relationship was improving when all of a sudden I learn his dad does not like me. He was racist and was turning his family against me. So he threatened him into breaking up with me. I had decided to make the choice for him and was packing up my stuff when he told me to stop and to put my stuff back in the room. He said he wanted me to stay.  In that moment I was so happy but then he started treating me like he did not want me around. We got into a fight and he told me to leave.

Should I feel like dirt?

I was already giving up on life before I met him and now it’s worse. I hate being on his planet with all these selfish human beings and tired of their materialistic lifestyles and lies. What is the point of living in this hell hole? I want to leave the planet. Literally. If I can’t then I might as well obliterate the human race.