The aim is not to win, but to play the perfect game. If I make a blunder, I've failed to do that, so there's no point in continuing.
False. Talking about the aim implies there is objectivity in the concept of aim of playing chess. More correctly, YOUR aim is to play the perfect game. No one else really cares whether they play perfectly, generaly speaking, though.
I strongly disagree. I will admit that most of my moves are probably poor, but I never make a move that is without some rationale, albeit that rationale may be misguided. Thus every game to me, win or lose, is a lesson in itself.
OK, we at least share the trait of playing mostly poor moves. But you said you never make move that is without some rationale. In your game against Knightvanvorst, what was the rationale for moving the pawn to f3? You resigned a couple moves later. Why did you choose that move over other moves?
Well, obviously because taking the pawn on e3 would have resulted in Qxe3+. The wrong move as it turned out, but the game was probably already lost.