I don't understand a lot of these responses.
If someone wants to give me a ball, or two, to concede a game, I don't really care how they do it. Rake the balls, concede verbally, break down your cue and run out of the room screaming... it all works for me. As long as you don't make the mistake of expecting that opponent to concede in a similar situation in the future, then it shouldn't affect you at all.
If someone gives you a nice gift for your birthday, do you say "thank you" and accept it, or do you complain because it wasn't wrapped the way you would have preferred?
No need to be so sensitive... take the game, break the balls and do it again.