I can totally relate as well.
My Mother is the youngest of nine and they all seem to be dropping like flies, every single year.
An aunt died this morning actually, and this time last year another aunt died, an uncle died, one is about to go, and so on and so forth.
My Mum keeps on saying how she's next and they are all going to go before we know it.
It also hits home because all of the aunts and uncles childrens neglected looking after their parents, in fact the one who just died was neglected so much so that it killed her (she was found in a bed of her own faeces).
My Mum said her kids are to blame for this, because she was SO angry at them for not looking after their Mother/her Sister properly.
I know deep down she was saying "please don't you dare do this to me?"
I won't. I wouldn't. I couldn't. But for a girl who isn't even sure want she wants children, how am I supposed to look after my ageing mother? I'll do the best job I can for her but still, it terrifies me everyday.