Why life is so short

Is very sad I know of my grandma situation, why life is so short? I always tell myself go places when you are still young and energetic. I saw my grandma today she is so skinny because she cannot eat anymore, she told me if she eat then she vomit out. She says she wants to drink water when I ask her, she told me nobody give her drink water. I took the cup and let her drink she drinking so fast it's like she very thirsty. My mom does not know of her condition, I bet she will be very unhappy. My grandma is my mom's mom and grandma is blind for many years. It has bee eight years she living in old folk home.

My uncle tried to take care of her but he fall sick himself. Where is other children when you need them?