My DDs are currently 26, 22 and 19. None are showing any signs of having or wanting children of their own at the moment. It will be their decision, not mine. I will go with the flow and not put pressure on them either way.
If grandchildren come along I will love them and want to get to know them. I will happily help out at times if required. I will be supportive, but without wanting to provide day to day childcare.
One thing I don't want to do is be like my own parents, who were barely interested in their grandchildren, of whom they had 6, all similar in age.
When my sister and I were growing up my mother emphatically said to us that we should never ask her to look after our children. The only exception to that was if one of us was in hospital, usually having another baby. Otherwise, it was followed through on. They refused to help out so that I could accompany DH to his Dad's funeral. They never built any relationship at all with any of their grandchildren. It meant that my sister and I both knew that we could never count on our own parents, whatever the circumstances.
I think my mother might be slightly regretting the sort of isolation in their own bubble that they practised now as my Dad died earlier this year and she is now on her own (we are obviously regularly doing what we can for her, but do have our own families too).
So I sort of understand what you are saying, but I see it from the other side too. It is nice to have family. It is also nice to have time to yourself.
Sometimes though, when I look at people who took the having time to themselves aspect as far as my own parents did I think you also have to be a little careful what you wish for. I am seeing the logical conclusion now with how lonely my mother now is, even with regular visits from us. It is terribly sad.