I think some take it too seriously. Saying gg after a match, regardless of the outcome, is just a show of good sportsmanship. If they are too demoralized to accept it as a simple pleasantry then that would be their problem, not mine.
Would you be so rude as to refuse a handshake in an otb game, after all, its just a hollow gesture-doesnt actually mean anything. Right?
You pompous blowhards who type gg at the end of games only demonstrates your arrogance or ego. Don't even think of resigning or it would only prove the previous statement.
In fact, the only way to win is not to play. Lets just play a friendly game of global-thermonuclear war.