Gosh so many helpful comments and insightful thoughts that have - coming from a dispassionate place of independence - given me some different perspectives. I can't thank you all enough for your time posting and thoughts.
Responding so some things that stood out for me
Why should he get away with coming over with his scathing criticism. He’s awful.
@Ourlady This helped me feel that actually I'm not unreasonable in being upset by this. I feel like my internal sense of self is really off at the moment. I feel very alone and inadequate. You know when you hear working mothers with children say things like they feel that they are failing at both their role at work and role as a mother. I feel like that about my whole life. I'm failing my dad, I'm failing myself, I'm failing the friends I've let drift, my work has gone to pot.
Like I said, telling him how I feel is no good because I know him and having tried before it just causes a row. He is very defensive, attacks me, says I will never accept I'm wrong, and then gets huffy and sulky. There's no point because as I said I can't face being estranged from him right now. Even with the miniscule help he offers me now that's miniscule help I need.
@Minimalme
You are in a situation where you have chosen to give up your life and build a new one around caring for your Dad.
Your brother doesn't want to do that, which is his right.
I think the burden of care is falling heavily on your shoulders and you understandably feel angry because your brother isn't taking 'his share' of the burden.
But he is free to make his choice, just as you have made yours.
This is much help. I think you have pinpointed something that I hadn't grasped and hadn't accepted. I think I feel like we had such a loving supportive family life as children and into adult hood that I cannot understand why he does not want to care for our father and does not want to help. I suppose I didn't see it as "his right" which I see now is fair but as an active but wrong choice and sign that he does not care about his parents or me. I need to work on accepting this but I guess in another way this is maybe at the core of what's upsetting me.
He's chosen to distance himself from his birth family and because of that after our mothers death he's lashing out for reasons why that was a justifiable choice. It wasn't at all but now he feels guilty because he's lost his mother and the chance to reconcile fully. Just as he chose not to be with her and spend time with her he's now doing the same with his father and finding reasons why that is ok.
@MaChienEstUnDick
That is so useful about family dynamics. I will look into bereavement counselling because I'm sure there is some deeper stuff going on here. I felt like it wasn't my problem because I'd always been very close and loving with both my parents even when I was working abroad we'd maintained a close bond. I see from what you say that my "role" itself maybe interconnecting with my brothers issues.
@Gerwurtztraminer - your first paragraph has a lot of good advice which I will try to embrace. When you say
yo could explore ways to address the future in terms of your father and not feelng guilty about having to use carers/a residential home as well.T
I hadn't thought about this being abnormal or something that I need help with but I think you might be right. I feel as if leaving him to the care of a stranger even for a short while is abandoning him when he needs me. In my head, I think of myself as a child and knowing he would never have abandoned me like that and think that I love him so much so wouldn't want to upset him. He is constantly checking I'm not leaving him which I think is partly related to his bereavement.
Honestly I can't thank you all enough for this help and advice. It so helpful to have independent opinions as I'm mired in grief and aloneness and caring responisiblities.