My folks are pretty similar....passive aggressive, conservative, think everyone has an agenda......also they make their own truths (they do believe them).

They are not my favorite people and they have made TONS of mistakes. But they are my parents. And I have some respect for them....they had it tough and made the most of things in their lives...so it's respect for what they have done and not who they have become.

I think that whatever you feel is just fine. You are human...

Perhaps you could simply put him in a different place in your heart, as I have done? I lose my patience a lot, but I try to be tolerant. Emphasis on "try". I am usually not successful. But I will say that because my expectations are much lower for them, it's easier than it used to be.