In all my years I never did because I'm a lazy mofo who can't even remember to slide to the chat window to write it. In fact very few of my opponents did or do it, it was never a big thing to begin with, imo.

Sometimes I remember I actually answered "yes gg" if it was truly a gg. But when it wasn't I told them the truth "That game sucked", even if I won on time or blunder or whatever. Gotta be honest with yourself.

Yes, and it would be nice if instead of lazily saying "GG" people would say something like: "Well to be honest, that game fell well short of my hopes. Let's strive for a more productive learning experience in our next attempt"