Family constantly being nasty/starting fights

[Idratherbeaspider]

Since I can remember my family have always been nasty to each other. I've been catching the brunt of it over the last few years but to be honest, the moment someone's back is turned they have to start on that person.
My own mum is part of it and one of the worst offenders. DDad just keeps quiet and allows it for an easy life.
All of my siblings make nasty comments about me and each other over Facebook that everyone can see. I've just read one that once again was completely uncalled for and thought sod them.
I don't really get a lot out of being in contact with them except for a feeling of dread whenever I have to see them.
They're nasty, vindictive and judgemental. They often like to use the phrase "playing devils advocate" when asking you something they know will offend you.
Aibu to just cut them out completely?
Is it likely that I will regret it? I think the only person I'd miss is DDad but I don't think my MH can handle anyone else any more. It would mean pulling out of some important family events but I just don't want anything to do with them any more and I don't want DS growing up thinking that he should ever treat his family that way or allow himself to be treated that way.

You're not obliged to hang out with people you don't like (and with good reason, by the sound of it), but instead of thinking of it as 'pulling out' of family events, merely consider it 'not going'.

That said, if it were me, I think it would depend on what the event was. If it's a thing 'belonging' to one of the people who is consistently unpleasant, then just be busy elsewhere that day. If it's someone you like better, then go but keep engagement with the nasty people minimal.

I realise that this is all easier said than done.

Aibu to just cut them out completely?
Of course you aren't.
If these were 'friends' would you still be in contact with them?
Of course not.
So no need with these people.
They are clearly toxic people and your DS does not need to be involved with all this.
It might be harder than you think though.