Completely fair question. For me, there is nothing more satisfying than sitting at a full blackjack table when everyone plays "right". I could be wrong, but everyone's odds are better in this case. I am a rule follower, so I try to play by the rules of the game. I guess I twitch just a tad when blatantly obvious bad plays are made. This is my problem and no one elses. That said you are absolutely correct. They are their hands to play. I just don't have to stay and suffer the downstream consequences, therefore I don't.