YANBU! I am aghast! They already benefit from granny care as it is. How can they think this is acceptable? I think it's an assumption lots of people have. A male colleague asked me what I do for childcare when I said I use a nursery mostly, he said to me 'Why doesn't your mum do it?' I replied that she still works, he said 'Get her to retire, grandmas are there for this stuff.'