My Dad and I held opposite opinions on everything while I was growing up...
He had an illustrious military career, but I eschewed structure and discipline. Wanted me to take advantage of an opportunity that wasn't available to him...the military academy.
In my senior year, I managed to maintain a solid GPA and good test scores and he was appointed to the academy selection committee...can you say "shoe-in"? I was interested in aviation back then, and was all but accepted to the Air Force Academy...I chose not to attend...too much partying left to do! He was crushed!
Later he retired from the military and stepped into the education arena. At one point, he was the college dean and eventual VP of a school I was attending, though I cut classes regularly and was a slacker for the most part.
He managed money fastiduously, while I lived by the "more debt is better" mantra...
Still, it took getting married and raising a family to understand his value system.
We still don't agree on everything, but I have begun to take on some of his habits (so says my wife)...