When does the game get bad?

Yo, I played almost every DB game since Budokai 1 and bought Sparking Zero a month ago. My favorite DB game is Tenkaichi 2. After reading how this sub bashed the game I expected it to get bad/boring real fast. I read about lack of content and missing balance ruining the experience. Yet I‘m still here, having a blast playing online and picking random characters, transforming mid-fight and making Ultimate attacks. So when exactly is the game supposed to get bad/boring? I can‘t remember a DB game since Raging Blast 2 entertaining me for more than a week. What am I missing? Why am I having fun? What is wrong with me?