Why do people hurt themselves?

Is it because when they experience a feeling, they are so scarred by it, they worry that they won't be able to feel anything anymore, so that's why they continue to hurt themselves, to ensure they can keep knowing that they are feeling? But it's so ironic, won't one eventually get used to the hurt then they think they are still unable to feel and they cause more harm to themselves?

Why isn't there anyone in their lives to help them then?
Why are all the psychologists just holding a piece of paper and hiding behind their desks all day?
Why won't they walk out on the streets and help them and put their knowledge to good use?

Will someone tell me why?

I just one day that I have the ability to love so much that I am causing damage to myself and that I don't know how to love myself properly. And it's not helping anyone especially me because all I can see are my efforts. What about the other person?
They're just eating me.

I always feel like I am the disadvantaged one. I am the one always being bullied and I have nothing to lean on, no physical real being to hold on to me. I just have to learn how to be strong on my own and fight my own battles.

I can do that but it's so difficult to have to learn how to stand all on your own all the freaking time.

I am human too. I am a girl and society puts females in such a disposition that they are to be demure, to be perceived as innocent and helpless. Maybe people reading this post won't think I'm all that but society feeds this to me and makes me think all that. I am challenging this view. So maybe that's why I don't like the majority because I am the minority that will challenge the views of society. I refuse to succumb. I am fed up.