Don't know if it's that; for me I couldn't claim it, but even though I still know on a general base what you do and what you don't do and somebody telling me from one to the other day I needn't be like this anymore, I'd still have my troubles with suddenly starting to behave differently just only because I can.
The only thing I'd have no troubles with is hurting and shooting somebody if he wants to get a piece of me - but that is because it's currently such a vague thing with fighting back in this justice system. It literally damns you to only turn the other cheek, all other things that you can do will make them bring you on the dock like you've been the evil arse who's harmed someone else for base motives.
So... in a way, I'd stick to it, even though I don't have made the best experiences with humans.
Call it a habit of the one who thinks he's superior to the others and he thinks he doesn't need it or "sparing to do what you already felt like it's crap when somebody else does it to you" or just tiredness because breaking rules and protecting your skin from being punished for it are some kind of "hard work" to do too.