Look at the bright side: you gained some wisdom.
It's damn hard to change people's way of thinking, and in most cases the only possible way is with indirect and re-iterated means.
People tend to build their own system and they perceive any change as an unbearable effort on their side, hence they judge change as a threat.
All that happens independently of what's right (and often both sides can be wrong).
And if you care of the person you are arguing with, after a certain point it's wiser to hold your mouth than trying to force your point.