Quote from BlueTronFTW »There's nothing wrong with playing to satisfy a competitive drive. At this point, I'd argue that it is silly to be upset at any level for someone acting the way you know they act for an extended period of time. You want to do "cool stuff" that you find interesting. He is trying to solve a puzzle of efficiency. Nothing wrong with either, but if you are just playing for fun it isn't going to work. Try playing commander, or start a cube, or start a regular draft group. Or, just stop playing with him and continue your friendship without this game. It definitely isn't a necessity.
As someone who plays to win and builds decks accordingly, I know that a lot of people look down on it as some sort of toxic behavior. You sorta indicate that too, claiming he "points the finger back at you" by saying your decks are good. That is a bit silly in my opinion. You are a bit salty about losing, and blaming him for building more efficient decks. Nobody is required to play differently to let you win.