-Batman Arkham Asylium: Never understood how to go under Bane to beat him
-Xenoblade Chronicles 2: I was tired being molested by every living creature, even a fly with +30 levels over me
-Doom: the game is about chasing demons but I was mostly hiding and escaping from them
-Majora's Mask
-Ocarina Of Time
-Prototype: Never reached the end, but was very close

While there have been games I spend a lot of time with only to stop playing, I have made it a point to try to go back and finish them. Sometimes it may take me weeks, months, or even several years to go back to them, but I've always tried to.

With one exception.

I sunk a lot of time into Destiny. I wanted to give the game a chance because it was Bungie. I was apprehensive about getting an online-only game The core combat loop was satisfying, the art design was great, and I liked exploring to find new areas, but over time the game started to wear on me. First it was the fact that on more than a few occasions I couldn't even play it when I wanted to. If my internet was out, or PSN was down, or the game's servers were down, I couldn't play it at all. All it did was remind me why I was opposed to online-only games in the first place. On top of that, over time it became clear that the real goal of the game wasn't to enjoy a story or defeat an enemy, but to farm loot. It was a never-ending grind for better weapons, better gear, and the materials needed to get those things. The game had no real end. I found all there was find, and fought all there was to fight, and having to do it all over and over just to get better stuff quickly lost its appeal. One day, maybe a month or two after the first expansion, it just started feeling more like work than fun, and I dropped it, having never picked it back up. Honestly, it would have been better off being a standard offline single-player experience instead of a quasi-MMO.

Xenoblade Chronicles 2 . 50 hours in. But i havent played in weeks. Will finish it eventually.

Life gets in the way all the time. I just keep playing whenever I possibly can. Oh I only had 30 minutes to game today? Ok then, but I'm not putting this game down till I finish it. During really bad weeks I might just get 10 hours of playtime. But I just keep going. I hate the idea of putting a game down. I'm stubborn. 

Dont usually do it, but these are the ones I can think of

Lord of Shadows 2 - Got to the Carmilla boss and stopped playing afterwards. This game is so goddamn awful and its a shame because the first one was great. I dont think ill give it a second chance.

Hyrule Warriors - Got bored right when Ganon shows up in the main story. Dont think ill be back to it either.

FF13 - I usually drop games when the cast of characters is so horrible, thats why it took me a while to finish FF10, but damn, FF13 is even worse. I did came back to finish it, but ive only finished it once. I usually finish RPGS a couple of times because its my fav genre.

Bravely Default is one that comes to mind, put like 70 hours and it just became like the worst thing ever in the second half of chapters, I did finish that horrible part of repetitive content and absolute stupidity from the main cast, but I never finished the game, I was so done with the game's bullshit, I just dropped it, I'm literally 2 bosses apart from the credits but I'm never going to back to it, been almost 5 years since.

Despite being a FF fan, I rarely choose to beat the game. For example:

FFXII: I got to the last boss, when I realized this was the end I was in too much denial and didn't beat it.
FFXIII: I got to the last boss, the game was so bad that I decided it was not worth any more of my time to beat it. I gave it a fair run, but in the end it was not worth it.

God of war ps4 will continue to play it one day
Mostly games I didn't like for example Borderlands

This is something I do all the time actually. Like I'll buy a game, play it for a bit, ignore it for like a year then come back to it when I'm in the mood. Like it legitimately took me 2 years to beat dragon quest 7 and right now I'm playing hollow knight and borderlands 2 both of which are games I started then put down ages ago

The 2nd part comes with even more recycling. It's the worst.