By placing my X in the top-left corner (0,0), I'm creating two potential winning paths: the diagonal from top-left to bottom-right through my center X, and starting lines along the top row and left column. This is a strong strategic position that forces my opponent to block one of these paths on their next move, while I can continue developing another winning threat. Since I already have the center position secured, taking a corner gives me the maximum flexibility for future moves.