I'm an only child. I feel like there is too much to explain, but my father has made life more difficult to the point of me wanting to cut him out of my life before he was hospitalized. He has always been difficult and a bit abusive, but it's more obvious to others now that he is older. I'm his only relative so I have power of attorney. I don't want anyone to take advantage of him so I do this, but I really don't want to. I feel bitter and angry because memories of distant and recent things he has done pop up. There's just so much and too much toxicity to cover. I really wish I had a family member to help.
I was severely abused by my OB (who died about 10 years ago) and it really did a number on my sense of self worth.
Mother WAS aware of it, but blamed me, in some weird convoluted way, for it. (what 3 yo has the capability of 'making' and older sibling sexually abuse them??)
She blamed me, of course, since OB was perfection on a plate.
I did not realize and fully comprehend the number that this abuse did on my until I crashed and burned in my 40's and tons of therapy brought back the monster. I re-lived all the yuck through EMDR, and while it was horrible to re-experience the abuse, I was able to compartmentalize and move forward. Turns out, OB had also molested my YB and YS. And a lot of kids in the neighborhood AND his own kids.
To this day my mom blames me. Nothing is going to alter that paradigm. I have quit trying.
Trying to be her advocate and helping to care for her really, ramped up my anxiety, and I finally had to step out and away.
I have 4 living sibs and one has primary care of mom. He's going to get her entire inheritance, but he doesn't know it.
If I were in your shoes--being alone, I would put up some mighty big walls and be as in control of what kinds of things you will and won't do for dad.
A therapist is, IMHO, a friend you PAY. I can say ANYTHING to mine and she always helps. I'm 66 and still grieving, to an extent, the lack of self worth that I was 'given'.
And my sibs are no help whatsoever. So, don't think that just b/c you have sibs somehow it's better. It can be worse.
I would contact a Licensed Social Worker in private practice to comb out what you want to do. You have accepted POA. You need to come to the conclusion in your own mind that what you have chosen is the best you can do out of a bad situation, OR find a way to untangle from Dad. Many folks have not had children. There is no one to take on their affairs other than the state and a court appointed Fiduciary. There is a way that doesn't include you.
So really, this is a matter of making your choice and being AT PEACE with it. You aren't alone and there is help out there for you. I wish you the best.
My suggestion is to make a list of the things you need to get done for him, and what needs to be done on a routine basis (paying bills, banking, etc) and set it up on a schedule. Try to set up his care so that you don't need to deal with things on a daily basis, just devote one day every week or two or three to him. Realize that no matter what you do he will be angry and abusive and it is not your fault or your problem to solve. Forgive yourself and don't accept the guilt. And when people tell you how lucky you are just stay silent because they have no idea what they are talking about.
Then you could concentrate more on being his Advocate & less on his daily 'stuff'.
How often do you have to help now? What tasks do you do that you would rather not?