I can agree with you on the fact that society is cruel and can be scary sometimes. I remember when I lost my fiance, David, to diabetic ketoacidosis. I secluded myself within my bedroom every chance I got for months. I lost all connection with friends, family, the world at large.
If I may be so blunt, it appears that you are suffering from depression. I suffer from A-typical depression(I suppose it's only fit as my brain is a-typical as well). Every so often I enter an episode of depression and have to fight my way out of it.
I would say, however, that to "just hang in there" is quite possibly the worst advice ever given to someone suffering from any type of depression. The whole idea is to drag yourself out of it, not to hang right there in it.
I guess what I am trying to say with this response is that, you need to talk to someone. Weather a therapist, or simply someone who has been there that is willing to lend an open ear and is willing to help. Believe me, words do amount to change.
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"The only way to live in an un-free world is to become so absolutely free that your very existance is an act of rebelian." - Albert Camus