Heh. Back during my high school and college anime days - in the days before online streaming - I would typically only consider shows that had a max cap of 26 episodes, with a few exceptions. These exceptions rarely, if ever, exceeded 52 episodes. This cap was a decent sign that there was at least some semblance of a narrative structure with an end point. And typically there was a better return on investment when it came to the satisfaction of reaching a resolution point (incidentally, see [MENTION=22779]Hussar[/MENTION]'s point earlier on resolution). And this is why I could never get into shows or manga like Dragonball Z, Naruto, One Piece, or Bleach. Incidentally, this is also why I have grown to disfavor mega-spine multivolume fantasy epic novels. I appreciate the art of concise narratives that respect my time.
When it comes to tabletop gaming, we are absolutely saturated with excellent quality games other than D&D. I want to play more than just D&D. But the available time for our late 20s and early 30s group is more limited. So the long sprawling 20 level adventures across a year or more are no longer feasible for us. Some tabletop RPG systems, whether knowingly or not, seem to have seized on this realization. A number of D&D-inspired systems are now only go to ten levels (e.g., SotDL, 13th Age, Black Hack, BtWaOA, DW) or are level-less entirely (ICRPG).