Do you really want to die just because your family is treating you this way? I'm not saying that your situation isn't as bad as you think it is. I don't know your life. But it seems to me that you're placing too much value on how they think of you, and not enough on yourself. I've thought this way before, to be honest, that if everyone else would rather not be around me then maybe I should just get on with it. But I also felt like that was giving them too much power. Why did I care more about them (those people that could so easily dismiss their own family as nothing) than I did my own life?
I decided to try and care more about myself, to take up my time with things I was interested in to get my mind off my problems. (Unix's reading idea is great. I wouldn't limit it to just a series though.) I also started working through some of my problems (health, debt, job change, etc.) and though nothing is actually fixed yet, I do feel better about myself because of the effort I've put in and the small (though still measurable) progress I've made. Not really better about my family, but they are always going to be that way - you can't change others.
If you have no one to talk to, I'm guessing you're talking about your family, try some one else. Some one unbiased, outside of your problem. There's a whole forum full of people on here that would be happy to help out with advice, if asked. If you feel you would benefit from therapy, I would give it try.
Don't be in such a hurry to die. Life is short, spend it the way you want and don't let other people ruin it for you.