Why?

This is the question I have well actually it is several questions actually that start with why. Why should I try? Why should I care? Why should I work hard? Why am I here? Why do I have higher standards? Why don't I have the support I need? Why don't I deserve more than I have now? And some others I'm sure but hope that this passes and I can move on. Right now I'm struggling to understand much of anything it seems like.