Some friends I've known since birth just lost their mother after a long running and very horrible illness. She wasn't in her nineties and she should have had many, many more years on this Earth.
It really isn't fair and please, no platitudes about how life isn't fair and god knows what he is doing or any other crap. It really doesn't make anyone feel better.
The truth is that cancer fucking sucks and any god that allows that kind of suffering is a fucking asshole!