I don't think any of us hate singleboxers as a rule.. how would 99% of us be in a guild/have any ingame friends if that were the case.

any ill feeling is mostly reactionary (as pointed out numerously) to an initial attack on us, whether personally of to the community as a whole.

Yes, it would be great if we take the high road every time, not enter in any flame war or whatnot, but you have to be a little realistic. It would either take someone with the patience surpassing that what is humanly possible (or a masochist inch: ) to never get enraged, frustrated, aggravated or at the very least feel resentment towards them, when these people throw this stuff at us.

I have been relatively lucky thus far not to receive many /ws, blatantly harassing me (the ones that I have, have been most unpleasant), but I know for a fact that many here do, receive whispers, regularly at that.

It isn't resentment for singleboxers tbh. It's resentment toward the malevolent and intolerant. Yes we are intolerant too, to an extent in doing so :P but there is a difference.

Intolerance of any acceptable behaviour is a bad thing (acceptable in the eyes of a qualified judge - in this case Blizz)
Intolerance of unacceptable behaviour is a good thing (imo anyway - and it obviously depends on the severity)