One set of my Grandparents (Dads parents, in their late 50s) were still working whilst providing childcare for us. My Grandad worked shifts, my Grandma worked from 6am-2pm on her feet. Then she’d get drop my Mum at work at 3pm, collect us from school at 3:30pm, drop us home at 7pm (my Dad worked 12 hour days 6-6), my Mum would get the bus home at 10pm.
Of course she then had to have to my Uncles child - only, she was 70 when he was born, but retired, so she had that grandchild 3 full days a week.
My Mums parents - never worked a day in their lives. Had us overnight twice a month and when my parents buggered off in holiday without us every year.
My Mum is now her Mums carer and works part time, zero interest in any of her grandchildren. My Dad remarried and moved hundreds of miles away, so we rarely see him. Once every other year for a day or two. At best.
It grates considering how hands on my Grandparents were with us. I’m still very close to my Dads parents. I don’t expect the same level of childcare, but I’d like them to have an actual relationship with their Grandchildren, who couldn’t pick them out of a line up.