What I saw was a friendly matching of wits, in which of course your father wants to win. If you seriously want to change his mind you may need to have a heart-to-heart
It took me at least two decades to realize that there are in deed these different modes of communication. At first glance it sounds so very stupid that this even happens.
Terminal values and preferences are not rational or irrational. They simply are your preferences. I want a pizza. If I get a pizza, that won't make me consent to get shot. I still want a pizza. There are a virtually infinite number of me that DO have a pizza. I still want a pizza. The pizza from a certain point of view won't exist, and neither will I, by the time I get to eat some of it. I still want a pizza, damn it.
Of course, if you think all of that is irrational, then by all means don't order the pizza. More for me."