I think Grandparents are important, absolutely. I loved mine, especially my paternal side.
Every situation is different just like every person, because I am on the other side of the fence I can see things differently sometimes.
Sometimes, it is ridiculous, there's been a few Grandpranets who aren't allowed to make Gingerbread biscuits with their Grandchild or are only allowed to see them if they are 'The Bank of Mom and Dad'
DH has never have a good relationship with his mum. That didn't start when I came along. Shes lied, threatened, caused stress, arguments..it did get worse when DD came along. She started an argument with us when I was in labour and months later lied about having Cancer.
She doesn't tell people that part though.
He tried to talk to her but nothing worked, him walking away from her was down to him not being able to handle her anymore. It was the last resort.
He didn't do it to punish her, he did it because he couldn't do it anymore.
He didn't enjoy it. He hates talking about and flat out refuses any kind of olive branch.
His mental health has got better and he's off the anti-depressants.
Of course though, it's all my fault and he's in a controlling marriage...
Emotional abuse is a recognised form of abuse, it doesn't just happen in marriages.
If either of my kids sat down and spoke to me like my DH did with his Mum I'd be beside myself, I'd want to make things right with THEM. I'd cut my right off if they wanted me to.
My Grandchildren would be beautiful bonus, but my relationship with my child would be my priority.