List of cool JRPG's I never finished.
For all the crap they're given there can actually be a lot of variety in jrpgs. For me, gameplay is king so a fun unique battlesystem goes a long way. Unfortunately, I tend to go so far into it early on that I burn out on the combat before I'm done with the game, and whatever story there is, isn't enough motivation to keep me going.
This dilemma, where the pacing of the combat is meant to be a slow burn, to go along the slow burn of the story, gets out of sync once I put 10 hours into grinding early on to get to all that sweet customization!
What's the solution? make shorter rpgs? At the same time, I managed to finish Persona 4 and Fire Emblem: Awakening, both after about 100 hours each, partly because I was invested in the characters, so maybe it's an issue of there actually being story you're interested in seeking out. FE:A in particular had its side content dedicated to learning more about your units, it's what made leveling them up appealing.
Either way, here is a list of some cool games that I didn't finish, but I wish I did.
UPDATE: Final Fantasy 13 and Xenoblade Chronicles were originally on this list. But I actually finally managed to go back and finish those, so maybe there's hope for the rest of the games on this list as well.