To be honest, I have always been beat down in my life by things I couldn't accomplish for either the lack of skill or knowledge. I have always developed myself. I have become great at SE'ing (Social Engineering), coding and hacking. I have always used my abilities to gain for myself. Reasons being that no one ever did something for me. I have always helped people out, but in return I got no thanks for my pain. Therefor I have learned to have a defense mechanism, I shut people out. When I do entrust someone into my life, I use that person for his or her knowledge, I basically use them for what they're good for before they shut me out of their lives. I have never had someone to look back at or to ask for help. I have always been poor. I always had to work hard for myself to be able to do fun things or whatnot. I now am at my own office, with my own 'found' customers, and I work hard to have a nice earning. I can now consider myself 'rich'. I have achieved all of this ON MY OWN. So I see no reason to do something for someone else.
Edit: I am sorry for the lack of care in the first draft of my reply. I quickly edited the post, back to work =)