We don't speak to some of my inlaws... they are toxic narcissistic people and continually backchatted judgemental things about us to other family members which resulted in them turning against us as they thought it was true.
We had one fall out, reconciled (but not properly as the issues were swept under the carpet) couple of years later they did it again, worse, so that was that, as there was never any apology, acceptance of Amy wrongdoing.
It's sad our children don't have some of their grandparents, uncle or cousins in their lives, but not in the sense that they are not people who our kids deserve them to be, and we would rather they have no influence than a negative one.
Sometimes I miss the people they SHOULD be, but not them themselves.
Life is much more peaceful without the dramas.
I've read posts on here from people with older/adult kids saying they never missed these people growing up and don't now, as there was no positive relationship, and have not resented their parents for going NC,which is reassuring.
I think people are starting to not put up with being treated badly more by family members nowadays, rather than just tolerating bad behaviours to keep the peace and keep up appearances.