I agree there are some nasty posts on here.
I would give my life for my DC. I just don't want to do it every day!
I don't have any DGC yet but I will be delighted if I do, and will want to be part of their lives, spoil them, of course be there if needed, but an unpaid childminder, no thanks! Looking after young children is exhausting and, having just retired at 58, I see this as my time to travel, read, study, pursue hobbies, and spend a lot of time with my adult DC going to the theatre etc. I don't want to turn down lunch invitations with friends or be unable to book a holiday bargain at short notice because I have committed to childcare on set days. I have already been left with the family pets after the DC left home and that is quite enough. I love them and they will have a home for life, but I am done with caring responsibilities, and will not be getting any more pets (except maybe a cat).
What is the saying, something about DGC being the reward for not killing your own DC (in jest of course, but I want the nice bits next time round, not the everyday drudgery).
Of course I might change my mind if DGC arrive, but I doubt it.
And for the pp who said why wouldn't you do it if you are healthy and not working, I say get a life. Otherwise, you will end up as one of the unappreciated DGPs being complained about on here by their DILs because you are over invested and interfering in their lives and not following their orders to the letter when carrying out your unpaid child care. Then other posters will come on and say how disgraceful, go no contact and withdraw grand-parenting privileges. And you will be left with a broken heart and no friends or interests because you sacrificed your 'golden years' to someone who didn't appreciate it.