Maybe you exist b/c others need you. Negative things happen to everyone. Try to quit blaming yourself for crap that happens. You are not alone, there are others in the same boat w/you but you don't have to know who they are. You DO exist. And somewhere within you is is a strong person who is just struggling w/the same crap almost everyone struggles with; marriage, money matters, job, raising kids. Please try to find one thing each day to be happy and grateful for. Hugs, peace and blessings for you. Pass it on.