My background is not in chess, and I definitely dislike when opponents concede (and would red thumb anyone who did so without asking first).
It's not about watching my opponent 'hobble', but about seeing myself win by the biggest score or margin possible (and occasionally about wanting to play the endgame).
It doesn't really matter if you find my motivation valid or petty: you sign up to play a whole game, not whatever part of it you can get through before you feel you are wasting your valuable time, and you should follow through on that commitment unless your opponent agrees it's unnecessary.
It's not about watching my opponent 'hobble', but about seeing myself win by the biggest score or margin possible (and occasionally about wanting to play the endgame).
It doesn't really matter if you find my motivation valid or petty: you sign up to play a whole game, not whatever part of it you can get through before you feel you are wasting your valuable time, and you should follow through on that commitment unless your opponent agrees it's unnecessary.