We are NC and low contact with DHs parents (they are divorced). Various and typical reasons for both - constant unpleasant remarks, boundaries are a slight against them, lying and manipulative behaviour, creating (imaginary) conflicts, unsafe and dysfunctional behaviour around DC and basically a lot of their lives were about deriding me. I won't go into details as they are very outing, but we didn't take the decision lightly - it was the only thing that we could do to protect our family.
We've now been NC for 5 years. I never thought it would continue for so long but asides receiving about 3 nasty messages about me there has been zero attempt to re-establish contact.
If you are NC, what do you do when parents or ILs are elderly? I do a lot for my family and know how much care elderly people need. Their behaviour almost drove me to a breakdown.