Life In 19x19

ok so thanks for the replies to my rather pointed question I realize of course there may be all kinds of reasons why someone might not reply to a greeting in a game, whether it's that they don't speak the language, whether they're a shy kid, or whether they're playing in bed or on a phone or all ...

To anyone who doesn't say hi/gg etc when playing on KGS, when you play in a go club in real life do you also sit down without saying anything, ignore your opponent when they greet you, and then walk off at the end of the game without saying anything? If not, do you feel that to do so would be rude?