Earlier quoted context omitted.
I don't think enjoyment is at the top of your mind when the task at hand is to get three big guys off of your back...
Having got the three guys off your back, how do you feel then?
I don't think "enjoyment" of the fact that you just asserted/defended yourself does any harm. Holding a grudge is far worse, imho. I recall some guy from the ScienceBlogs commenting on his high school reunion, and you could tell he had some deep running hatred going on even after several years - to the point of enrolling his kids in martial arts classes with a "so-maybe-they-can-get-some-sweet-revenge-for-me" type of attitude.
The martial arts are not bad per se, but a parent teaching a kid that it's ok to turn to violence when they can't get along with their peers is not very responsible.