Well, it's the conflict I had with the teacher saying "you have to hate!" and eventually resulted in my dropping out of the school. To divource this conflict from the One who I follow and worship, namely Jesus Christ, takes away the entire origin of where the conflict comes from. I am a follower of Jesus Christ, and of course His teachings against hate and pro love of everyone, including your enemy is where this conflict comes from. There would be no point in writing the post without including why I have a problem with hating anyone, including an attacker, even if they are in the wrong. I believe I could even kill an attacker if there was no other alternative, but I would pray for his soul afterwards, hate what he is doing but not hate the man himself.
If we really want to get technical about this, then we really should not be fighting at all or training for anything more than inner peace and the history and enjoyment of the art, nothing more. I say this, because if we can't bring ourselves to hate or be angry at someone, then instead of trading blows, we should just be as peaceful as possible, always resolve any conflict with kind words instead of angry ones, etc.
IMHO, and this goes back to what I've said in thread about prison and reform...if people really wanted to reform, they'd never end up back behind bars. We all control how we are, and what path we want to take.
That being said, if someone chooses to take the wrong path, and attempt to inflict harm upon me or someone else, then no, I do not feel any remorse for them, nor do I feel sorry for anything that happens to them, either by me or someone else. Hopefully the guy would think back and reflect back on what he did, and maybe think twice about doing the same thing again, but no, I'm not going to pray for him and hope that he gets better. He's the one that needs to do the praying, not me.