Sadness

So one of my friends dad's in the hospital. My sister's brother-in-law is still in the hospital. Plus now they say my great grandpa is so bad that he probably has less than a month. It's not fair. I know i shouldn't think like that and that life's not fair but how come my great grandpa that's been able to fight cancer more than once and black lung and even malaria has to die now when there's still 'bad' people out there. I know my great grandpa's not perfect but he's my only grandpa left and i can't lose him. God has his own plans i guess but in this instant i seriously don't see what good could come from this situation. There's too much pain around for everybody to bear. At some point doesn't he have to say that enough is enough?