Originally posted by Angry Boy
Resign = Lose
Don't resign = chance (however small) of not losing and learning something.
I consider it rude that some people tell others when they should resign.
I have to agree with you on that last part about it being a bit rude for asking your opponent to resign...
If your opponent has an easily won position, then you're lost and the game is over; you just aren't willing to accept it
Nobody likes to lose, but everyone does. Just get over it and know when to call it quits.
The only flaw, is that everyone has their own opinion of what is 'clearly winning'. IF you're down a piece with no counterplay, you're dead. If you've got decent counterplay, then perhaps its worth playing on.
Endgames, I'd say resign if your opponent can win it easily. For example, say you're down a rook for nothing in an endgame, that's basically worth resigning (all you'll learn is that rooks eat pawns if you continue...) but if you're down 1-2 pawns in an opposite Bishop endgame, then perhaps it's worth playing out.