I completely understand OP's and DBF's pov as they are both as valid as each other, please don't slate DBF.
My mum is exactly the same OP. I have been extremely hurt over the years, my mum doesn't even want to be around her grandchildren over christmas as my parents make a point of taking a cruise then.
My mum's pov is the same as DBF, spent the best years of her life bringing us up, she was not naturally maternal, had us 3 in quick succession 'to get it over with', was also a teacher who cut her career very short because she couldn't deal with some shocking pupil behaviour.
My mum was an only child and couldn't deal with sibling behaviour at all, so once we got to the squabbling stage, she couldn't cope. She was, like huge no.s of women in the 70's , on Valium.
So once she got us off her hands she wanted to enjoy her life, which does not involve children, and all their messiness, squabbles, bad manners, noise and mucky bits.
I used to cry about it when I had mine as she had zero interest. Once we stayed with them and when my 2 yo started to cry I had to rush her out to the car so she could do it there. My other toddler forgot to put the toothpaste lid back on my dad had such a fit about it he told us we'd have to leave.
My dad went through National Service and cannot abide children who have runny noses, leave a mess, are naughty or answer back either so being around them was always like treading on eggshells.
My friends have 2 sets of grandparents nearby who are always on hand so that they could go back to work, have holidays and nights out.
Despite this, I dearly love my parents and bend over backwards for them so that my dc do get to see them. Unfortunately, even now they cannot see my dc without criticising them or reducing them to tears so I try to be around as a form of damage limitation.
These are the only GPs my dc have so we try and make the best of what we have. Luckily, we have excellent friends so dc do have lots of good experiences with other adults.