Very True Hermes,
If you're not having fun (or getting paid good money to do it) why do anything, even cycling? Of course I realize sometimes there are family or social obligations that are neither fun nor profitable (going to funerals, for example), but overall and generally, if it's not fun, don't do it!
I really like climbing big (tall, long, steep) mountain roads on my road bike and quite often when I finally reach the summit, I remark (whether anyone is listening or not) "That was fun!" On several occasions, other cyclists have not been in agreement with that statement. Thus, "fun" is a personal definition as well as social definition.
That's my take on it, anyway, YMMV!
Rick / OCRR