The analogy with a sport like tennis is flawed. In each point of a tennis match I can play up to my full ability no matter how many points I have lost previously. But this is not so in chess. When we are significantly behind in material in chess it's like playing tennis with no racket. If you played a tennis match where a 5-0 lead in a set meant you play the next game with no racket, surely you'd resign that set.
Good analogy, but something tells me some of the guys in this thread would play on without a racket...
Fine, if you don't want to resign I'll take all your pieces, then I'll promote all my remaining pawns. Then finally I may put you out of your misery.
Oh and btw, I'd have boxed your king quite securely so all you can do is move a1 to b1, back to a1, then to b1 for as long as I can be bothered to torment you.
Doesn't that sound fun?