There are plenty of games I thought were good but couldn’t get into, or games where I got distracted and fell off them. So I’ll limit this list to games where I got really far along and then made a conscious decision to stop.
Persona 4 Golden, at the start of the Golden content. I wanted to be done and it was too much to ask me to do another, even longer dungeon.
Zelda: The Wind Waker. I acknowledge it as a good game, but I just did not like sailing around.
Very recently, Age of Wonders 4. I really disliked the last story map and how many factions were running around.
Metal Gear Solid V. Reused missions in the second act, nuff said.
KbinItTogether