I'm not being controversial with this comment, just passing along what I hope all will appreciate.
Don't be sorry for your loss; cherish it. You can be sad that he is gone, but don't wear out a single minute of remorse about his passing. If a man is lucky in life, he gets buried by his children, and they all sit around telling stories that bring to mind the great life they had with him.
The unlucky men get to bury their children. What you are dealing with now was inevitable and he wouldn't have had it any other way...except perhaps, a few years from now.
When I buried my father, all the family sat around stony eyed except for his mother. He just never did what was needed to make people regret his passing. Neither a loving or caring parent, he didn't go out of his way to do for folks what they often wanted. He wasn't an evil fellow, and you couldn't point at him and say "There goes a bad man". On the other hand, he did not build any store of fond memories with his family, and we didn't seem to care much when he died.
Nope. My dad didn't teach me anything about saws or trees, either. I can distinctly recall almost everything he ever taught me, because those were rare events. Even then, they were not shining examples of patience on his part. He did do an excellent job of teaching me how to do things without help or advice from others.
You apparently had a good father, be happy for it. Mourn his passing, and resolve to build on his heritage. I am a pretty good father, but it is because I have resolved to not repeating my fathers behaviors.