|Fun, FUN, karate don't got to give no stinkin fun!|
I really don't feel a classical/traditional form of karate-justu-do is supposed to be "fun." I would allow that for me the entire process has been the most enjoyable and beneficial endeavor ever - for me, but not strictly "fun."
When I think of fun I think of those times running and swimming at the beach, the diving and swimming at my favorite swimming hole or the time I sat on an old log with my cane pole dipping into calm waters striving to catch catfish.
Even if I turned this toward say basketball. Yes, you can have fun with that sport or you can enjoy that sport or you can not have fun and spend the time, effort and determination in becoming the best basketball player ever which I can say may involve some fun but more hard sweaty not so much fun "work."
My practice inspires me, it helps me to grow and it provides some periodic enjoyment - fun, it is not fun.