"where there is no goodwill from others, reciprocal goodwill towards them is a vulnerability and when dealing with a tribe that sees vulnerability as opportunity, it will cost you dearly."

It is hard when the person who has adopted membership of that other "tribe" is your own flesh and blood, your own offspring. You self-censor expressing your views on so many things to avoid triggering their confirmation biases that you are either "evil" or "stupid" or both. You hope to keep the door to communication open so that one day there might be some word you say that will be received as useful, helpful, or wise and caring. But eventually you realise there is no remnant of good will towards you left towards you within them. Only entitlement and injustice-collecting when you express hurt or set some kind of limit on what you are able to tolerate in a good-natured way.

When the bifurcation of the Venn diagram into two completely separate spheres occurs within your own family, it is helpful to have a good cognitive map of what is going on so i thank "bad cattitude" for that. But is still bodily shattering somewhere deep in your heart.