Though primarily it was for a joke, I'm curious as to what instrument you picked up....would it be the guitar?
I would put forth the suggestion that the contradiction doesn't really count, it seems that you derive fun only from intelligent/worthy opponents though it may be dependent on how much the other sets themselves up and how far they would fall, that is....how much enjoyment/reward you would get out of it however since you specifically commented on that you abandon the debate if the user "making no sense" which would suggest that you wish to protect how your perceived intellectually whether it's by others or by yourself (something similar to "I'm better than this" kinda thing).