Not only that, but you know what familiarity breeds, right? Right now you can keep a lid on it. Right now you can go through the motions. What about another year of it? What about ten more years of it?
If you want to keep an amicable relationship going with your family in the long term, I’d say keep your bags packed and be on the lookout for escape opportunities. One way or the other, the way you describe things, something’s going to give eventually, and it might not be pretty.
On the bright side, you may yet find support from unexpected quarters in your family. It’s funny who ends up pulling through for you in a pinch, and it’s not always who you’d expect. Don’t burn any bridges you don’t have to.