I would say I disagreed with him a lot when I was younger, and was pissed at him quite a bit too, and for a while, though we were fundamentally different in terms of philosophy about life.
But as time progressed, I learned that he was right about almost everything. And some of the smallest things are the things that were most important that I learn. And perhaps the reason he told me the things that were so "counter-intuitive" to my own personal philosophies were maybe because he knew so well exactly who I was/am.
So I guess you could say I have come to appreciate him a lot more as I have grown older.
Also I have noticed more recently that like any other person, he also has things that hurt him and/or cause him to be sad, or discouraged, and also that he is getting older, like all other people. That makes me kind of sad, and even more sad that most of my life I was an asshole and would not have given a shit.