this is not the only reason to surrender
surrendering means you see that you have no way of winning a game and give the oponent the win
if you would build in some silly badge for that, people would be happy when you surrender
instead the game and some players choose to disrespect your wish to surrender
well, guess what, noone is a slave here and has to play games he does not want to play anymore
i do not like the surrender rules and i do always accept the surrender of my opponent, as it should be in my opinion
surrender says: "ok, you win, i do not wish to play this anymore"
and by disrespecting this you kinda say "oh, you know, i really do not care, cause i want to get that badge and whether both of us are having fun does not interest me at all. just be my slave and continue playing so i can get that badge"