Why can't

I trust people? why must when I trust people do they put a knife through my heart? then they run around saying they are good people, and maybe they are, but what gives them the right to murder me? it is not like I have done anything to anyone to deserve this when it happens, but I guess that is just my life, and it will go on until I am dead, and by the way who would I make sad if I died? my fried? they don't even know I am alive, so why would they care I died, ny family? nope? anyone? I wonder about this at times